diff --git a/.github/workflows/run_test.yml b/.github/workflows/run_test.yml
new file mode 100644
index 00000000..c45bcbfc
--- /dev/null
+++ b/.github/workflows/run_test.yml
@@ -0,0 +1,32 @@
+name: simple_calculator unit test
+  
+on: [push]  
+  
+jobs:  
+  build:  
+    runs-on: ubuntu-latest  
+    strategy:  
+      matrix:  
+        python-version: ["3.10"]  
+  
+    steps:  
+      - uses: actions/checkout@v3  
+      - name: Set up Python ${{ matrix.python-version }}  
+        uses: actions/setup-python@v4  
+        with:  
+          python-version: ${{ matrix.python-version }}  
+      - name: Install dependencies  
+        run: |  
+          python -m pip install --upgrade pip  
+          if [ -f requirements.txt ]; then pip install -r requirements.txt; fi  
+      - name: Lint with Ruff  
+        run: |  
+          pip install ruff  
+          ruff --format=github --target-version=py310 .  
+        continue-on-error: true  
+      - name: Test with pytest  
+        run: |  
+          coverage run -m pytest tests/tests_1b.py -v -s  
+      - name: Generate Coverage Report  
+        run: |  
+          coverage report -m
\ No newline at end of file
diff --git a/labs/lab_1/lab_1a.py b/labs/lab_1/lab_1a.py
index 9d15ec83..45893d05 100644
--- a/labs/lab_1/lab_1a.py
+++ b/labs/lab_1/lab_1a.py
@@ -3,14 +3,15 @@
 
 The first lab in the BWSI CSS course. To complete this lab, fill out the variable on line 10
 with your name. Then, save the code, add it to the staging area, and commit it to the Git tree.
+This is to simulate a change made on a robot: robot_speed = 3 # m/s
 """
 
 def main():
     print("Hello World!")
 
-    name = "" # TODO: Insert your name between the double quotes
+    name = "Shravan Aadithya" # TODO: Insert your name between the double quotes
 
     print(f"{name}, Welcome to the CSS course!")
-
+    print("Hi all! I'm Shravan, and I'm a sophomore from Virginia! I am in TSA, and I have been in a height growth competition.")
 if __name__ == "__main__":
     main()
diff --git a/labs/lab_1/lab_1b.py b/labs/lab_1/lab_1b.py
index e58dd957..f148691b 100644
--- a/labs/lab_1/lab_1b.py
+++ b/labs/lab_1/lab_1b.py
@@ -37,14 +37,26 @@ def simple_calculator(operation: str, num1: float, num2: float) -> float:
     else:
         raise ValueError("Invalid operation. Please choose from 'add', 'subtract', 'multiply', or 'divide'.")
 
+def request_sanitized_number(prompt: str) -> float:
+    while True:
+        try:
+            number = float(input(prompt))
+            return number
+        except ValueError:
+            print("Invalid input. Please enter a valid number.")
+
+def clean_operation(operation: str):
+    while(operation != "add" and operation != "subtract" and operation != "multiply" and operation != "divide"):
+        operation = input("Enter a valid operation (add, subtract, multiply, divide): ").strip().lower()
+    return operation
 def main():
     
     print(f"===== Simple Calculator =====")
 
     # Ask the user for sample input    
-    num1 = float(input("Enter the first number: "))
-    num2 = float(input("Enter the second number: "))
-    operation = input("Enter the operation (add, subtract, multiply, divide): ").strip().lower()
+    num1 = request_sanitized_number("Enter the first number: ")
+    num2 = request_sanitized_number("Enter the second number: ")
+    operation = clean_operation(input("Enter the operation (add, subtract, multiply, divide): ").strip().lower())
 
     # Perform the calculation and display the result
     result = simple_calculator(operation, num1, num2)
diff --git a/tests/tests_1b.py b/tests/tests_1b.py
index be6b822d..fbddc186 100644
--- a/tests/tests_1b.py
+++ b/tests/tests_1b.py
@@ -26,6 +26,7 @@ def test_division():
     assert simple_calculator("divide", 6, 3) == 2       # Test for positive numbers
     assert simple_calculator("divide", -4, 2) == -2     # Test for negative and positive number
     assert simple_calculator("divide", 5, 2) == 2.5     # Test for division resulting in float
+    assert simple_calculator("divide", 0 , 1) == 0      #Test for dividng 0 by num
 
 def test_division_by_zero():
     with pytest.raises(ValueError, match="Cannot divide by zero."):