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.

There were 28 girls and 35 boys on the playground at recess . How many children were there in all ?
63

Johnny practiced for the track team and ran 3 laps per minute . How many minutes did it take Johnny to run 10 laps ?
3.33333

Sarah had some trucks . She gave 13 to Jeff , and now she has 38 trucks left . How many trucks did Sarah have to start with ?

51