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

Example Input: Problem: a room 5 m 55 cm long and 3 m 74 cm broad is to be paved with square tiles . find the least number of square tiles required to cover the floor ?
Example Output: 17

Example Input: Problem: a question paper has 2 parts , a & b , each containing 8 questions . if a student has to choose 8 from part a & 4 from part b , in how many ways can he choose the questions ?
Example Output: 70

Example Input: Problem: in what time will a train 100 metres long cross an electric pole , if its speed be 144 km / hr ?
Example Output:
2.5 sec