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.

Jacques earns 8.6 dollars per hour . For each hour over 40 hours he earns 12.9 dollars per hour . If he works 55.5 hours in a week , what pay should he receive ?
543.95

In fourth grade there were 11 students at the start of the year . During the year 6 students left and 42 new students came to school . How many students were in fourth grade at the end ?
47

Irwin 's family went on a camping trip in the mountains . On the first day , they hiked from their car to the campsite . First , they hiked 0.2 mile from the car to a stream , and 0.4 mile from the stream to a meadow . Then they hiked 0.1 mile from the meadow to the campsite . How many miles did Irwin 's family hike in all ?

0.7