You are given a math word problem and you are supposed to apply a single mathematical operator 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.

at the fair the 'twirly tea cups ' ride can hold 9 people per teacup . if the ride has 7 tea cups how many total people can ride at a time ?
63

there are 84 leaves . there are 139 ladybugs on each leaf . how many ladybugs are there in all ?
11676

oliver was weighing boxes for moving . the first was 2 pounds the second was 3 pounds and the last was 13 pounds . what 's the difference between the weight of the first box and the third box ?
11