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 Input:
Andrew spent 3 day working on his Science report . He worked for 2.5 hours each day . How many hours did he work ?

Ex Output:
7.5


Ex Input:
Kenji and his classmates placed colored blocks on a scale during a science lab . The yellow block weighed 0.6 pounds and the green block weighed 0.4 pounds . How much more did the yellow block weigh than the green block ?

Ex Output:
0.2


Ex Input:
Fred earns $ 12.5 an hour cleaning houses . If he works for 8 hours , how much money will he make ?

Ex Output:

100