Why it doesn't output?

Question

https://code.sololearn.com/cmQ2JrxzSzCB/?re

while True:
print("Options: ")
print("Enter 'Add' to add two numbers. "))
print("Enter 'Subtract' to subtract two numbers. ")
print("Enter 'Multiply' to multiply two numbers. ")
print("Enter 'Divide' to divide two numbers. ")
print("Enter 'Quit' to end the program! ")
user_input = input(": ")

if user_input == "Quit":
break
elif user_input == "Add":
num1 = float(input("Enter a number: \n"))
num2 = float(input("Enter a number: \n"))
result = str(num1 + num2)
print("The answer is: " + result)
elif user_input == "Subtract":
num1 = float(input("Enter a number: \n"))
num2 = float(input("Enter a number: \n"))
result = str(num2 - num1)
print("The answer is: " + result)
elif user_input == "Multiply":
num1 = float(input("Enter a number: \n"))
num2 = float(input("Enter a number: \n"))
result = str(num1 * nu

Answer 1

You have to remove the closing bracket ")" in line 3. Other than that the code works fine.
Just remember that in Sololearn you have to provide the whole input beforehand, separated with newlines, so:

Add
5
4
Quit

Answer 2

Last line finish it
result =str (num1 *num2)

But Do this

result=num1*num2
print ( "% d"% result)

And do this every where else