instruction:
You are given a math word problem and you are supposed to apply multiplication or division mathematical operators on the numbers embedded in the text to answer the following question and then only report the final numerical answer.
question:
In a bag there are 13 red marbles , 5 blue marbles , and 7 green marbles . What percent of the marbles are green ?
answer:
28


question:
Mike worked 3 hours , each day , for 5 days . How many hours did he work in total ?
answer:
15


question:
Ryan has 72 marbles and 17 blocks . If he shares the marbles among 9 friends , how many marbles does each friend get ?
answer:

8