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:
On a hot day, Sam poured 1 bucket of water into a plastic wadingpool. A few minutes later he added another 8.8 buckets. How muchwater did Sam pour into the pool?

Ex Output:
9.8


Ex Input:
A restaurant served 6 cakes during lunch and 9 during dinner today.How many cakes were served today?

Ex Output:
15.0


Ex Input:
Sam has 86 yellow and 20 green marbles. Joan took 25 of Sam'syellow marbles. How many yellow marbles does Sam now have?

Ex Output:

61.0