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.

A store had 27 coloring books in stock . They ended up putting them on sale and getting rid of 6 of them . The put the ones they still had onto shelves with 7 on each shelf . How many shelves did they use ?
3

Last Saturday , Spencer walked all over town running errands . First , he walked 0.3 mile from his house to the library and 0.1 mile from the library to the post office . Then he walked 0.4 mile from the post office back home . How many miles did Spencer walk in all ?
0.8

Joan grew 24 pumpkins , Keith grew 42 pumpkins , and Alyssa grew 13 pumpkins . They worked for 34 days on the farm . How many pumpkins did they grow in all ?

79