diff --git a/labs/lab_1/lab_1a.py b/labs/lab_1/lab_1a.py
index 9d15ec83..15983307 100644
--- a/labs/lab_1/lab_1a.py
+++ b/labs/lab_1/lab_1a.py
@@ -8,7 +8,7 @@
 def main():
     print("Hello World!")
 
-    name = "" # TODO: Insert your name between the double quotes
+    name = "Andrew Wu" # TODO: Insert your name between the double quotes
 
     print(f"{name}, Welcome to the CSS course!")
 
diff --git a/labs/lab_1/lab_1b.py b/labs/lab_1/lab_1b.py
index e58dd957..c9ddadaa 100644
--- a/labs/lab_1/lab_1b.py
+++ b/labs/lab_1/lab_1b.py
@@ -9,6 +9,23 @@
 
 """
 
+def requestion_sanitized_number(promt: str) -> float:
+    """
+    Function that takes in a prompt string, requests input from the user, and returns a sanitized float.
+
+    Args:
+        promt (str): The prompt to display to the user when requesting input.
+    Returns:
+        float: The sanitized float input from the user.
+    """
+    while True:
+        try:
+            user_input = input(promt)
+            sanitized_input = float(user_input)
+            return sanitized_input
+        except ValueError:
+            print("Invalid input. Please enter a valid number.")
+
 def simple_calculator(operation: str, num1: float, num2: float) -> float:
     """
     Function that takes in two numbers and an operation (add, subtract, multiply, divide),
@@ -42,8 +59,8 @@ 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: "))
+    num1 = requestion_sanitized_number ("Enter the first number: ")
+    num2 = requestion_sanitized_number ("Enter the second number: ")
     operation = input("Enter the operation (add, subtract, multiply, divide): ").strip().lower()
 
     # Perform the calculation and display the result