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.

Example input: Rachel strolled to Nicholas 's house . It is 10 miles from Rachel 's house to Nicholas 's house . It took Rachel 5 hours to get there . How fast did Rachel go ?
Example output: 2
Example explanation: Rachel's speed = distance/time = 10/5 = 2
Q: There are 64 pigs in the barn . Some more come to join them . Now there are 86 pigs . How many pigs came to join them ?
A:
22