You are given a math word problem and you are supposed to apply a single mathematical operators like addition, subtraction, multiplication or division on the numbers embedded in the text to answer the following question and then only report final the numerical answer.

Sandy worked 45 hours in the last 5 days . Assuming that she worked the same amount of hours each day , how long did she work each day ?
9

Each CD rack holds 8 CDs . A shelf can hold 4 racks . How many total CDs can fit on the shelf ?
32

Jane starts with 87 crayons . 7 are eaten by a hippopotamus . How many crayons does Jane end with ?

80