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

Example Input: Problem: if log 2 = 0.3010 and log 3 = 0.4771 then the value of log 4.5 is :
Example Output: 0.6532

Example Input: Problem: a cistern is normally filled in 6 hours but takes two hours longer to fill because of a leak in its bottom . if the cistern is full , the leak will empty it in ?
Example Output: 24

Example Input: Problem: what will be the cost of building to paint which area equal to 196 sq ft , if the price per foot of building is rs . 15 ?
Example Output:
840'