instruction:
You are given a math word problem and you are supposed to apply multiple mathematical operators like addition, subtraction, multiplication or division on the numbers embedded in the text to answer the following question and then only report the final numerical answer.
question:
Mike bought some toys . He bought marbles for $ 9.05 , a football for $ 4.95 , and spent $ 6.52 on a baseball . In total , how much did Mike spend on toys ?
answer:
20.52


question:
A person pays 145.8 dollars for 6 months use of an internet service . How much will 7 months of service cost ?
answer:
170.1


question:
In fourth grade there were 35 students at the start of the year . During the year 10 students left and 10 new students came to school . How many students were in fourth grade at the end ?
answer:

35