The task is to generate the correct answer for a given math problem.

Input: Consider Input: Problem: if the sides of a triangle are 26 cm , 24 cm and 15 cm , what is its area ?

Output: 180


Input: Consider Input: Problem: working together , wayne and his son can shovel the entire driveway in three hours . if wayne can shovel six times as fast as his son can , how many hours would it take for his son to shovel the entire driveway on his own ?

Output: 7


Input: Consider Input: Problem: each week , harry is paid x dollars per hour for the first 30 hours and 1.5 x dollars for each additional hour worked that week . each week , james is paid x dollars per hour for the first 40 hours and 2 x dollars for each additional hour worked that week . last week james worked a total of 50 hours . if harry and james were paid the same amount last week , how many hours did harry work last week ?


Output: 5