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.

[EX Q]: Jessica weighs 49 pounds . Thomas weighs 44 pounds . How much heavier is Jessica than Thomas ?
[EX A]: 5

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

[EX Q]: Before the recent housing boom , there were 1426 houses in Lawrence County . Now , there are 2000 houses . How many houses did developers build during the housing boom ?
[EX A]:
574