instruction:
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.
question:
todd has some gum . steve gave him 16 more pieces of gum . now todd has 54 pieces of gum . how many pieces did todd have to start with ?
answer:
38

question:
a ballet class wants to divide its 90 members into some large groups at 7 members each and some small groups at 3 members each . in order to make the least number of groups how many large groups should be made ?
answer:
12.857142857142858

question:
at the school halloween party 2 girls and 9 boys dressed as ghosts . how many people total dressed as a ghost ?
answer:
11