Update custom tool

app.py

@@ -9,14 +9,13 @@ from Gradio_UI import GradioUI
 
 # Below is an example of a tool that does nothing. Amaze us with your creativity !
 @tool
-def my_cutom_tool(arg1:str, arg2:int)-> 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 nothing yet 
+def calculator(first_number:int, second_number:int)-> int:
+    """A tool that multiples two integer number 
     Args:
-        arg1: the first argument
-        arg2: the second argument
+        first_number: A first integer number
+        second_number: the second integer number
     """
-    return "What magic will you build ?"
+    return first_number * second_number
 
 @tool
 def get_current_time_in_timezone(timezone: str) -> str: