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:
Joan had 695 Pokemon cards, and 6 were torn. Sara bought 133 ofJoan's Pokemon cards. How many Pokemon cards does Joan havenow?

Ex Output:
562.0


Ex Input:
A bucket contains 3 gallons of water. If Derek adds 6.8 gallons more,how many gallons will there be in all?

Ex Output:
9.8


Ex Input:
Ron weighed 2 colored metal balls during a science class. The blue ball weighed 6 pounds and the brown ball weighed 3.1 pounds. If Ron places both balls on the scale at the same time, what will thescale read?

Ex Output:

9.1