You are provided with an arithmetic question. Your task is to compute the solution using the given arithmetic operations. The only arithmetic operators needed to answer the questions are'+'(addition) and'-'(subtraction). The answer should be correct to one decimal place.

Ex Input:
Vince's bus ride to school is 0.725 mile and Zachary's bus ride is 0.525 mile. How much longer is Vince's bus ride than Zachary's?

Ex Output:
0.2


Ex Input:
Sam had 49 pennies and 24 nickels in his bank. His dad gave him 39 nickels and 31 quarters. How many nickels does he have now?

Ex Output:
63.0


Ex Input:
Sam grew 4 watermelons, but the rabbits ate 3 watermelons. Howmany watermelons does Sam have?

Ex Output:

1.0