Question: Add a multiplication method ( _ _ mul _ _ ) to the Fraction class so that it will be able to use the *

Add a multiplication method (__mul__) to the Fraction class so that it will be able to use the * operator to multiply two Fractions. This method should return a simplified Fraction the is the product of the two fractions.
The Fraction class has already been supplied - based on the one that was in the reading. You just need to add the new __mul__ method and test it out.
Hint: See the __add__ method as an example.

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