Update app.py

app.py

@@ -9,7 +9,7 @@ from Gradio_UI import GradioUI
 
 # Below is an example of a tool that does nothing. Amaze us with your creativity !
 @tool
-def mathematic_operation(num1:int | float, num2:int | float, ops: str)-> int | float | str: #it's import to specify the return type
+def mathematic_operation(num1:int | float, num2:int | float, ops: str)-> str: #it's import to specify the return type
     #Keep this format for the description / args / args description but feel free to modify the tool
     """A tool that does mathematical operation of addition, subtraction, division, and multiplication
     Args:
@@ -19,13 +19,13 @@ def mathematic_operation(num1:int | float, num2:int | float, ops: str)-> int | f
     """
 
     if ops == "add":
-        return num1 + num2
+        return str(num1 + num2)
     elif ops == "subtract":
-        return num1 - num2
+        return str(num1 - num2)
     elif ops =="div":
-        return num1/num2
+        return str(num1/num2)
     elif ops == 'multiply':
-        return num1*num2
+        return str(num1*num2)
     else:
         return f"Operation {ops} is not available, please only use 'add','substract','div', and 'multiply'"