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

Example Input: Problem: the volume of water inside a swimming pool doubles every hour . if the pool is filled to its full capacity within 8 hours , in how many hours was it filled to one quarter of its capacity ?
Example Output: 6', 'e ) 7'

Example Input: Problem: 20 percent of country y ' s yearly exports come from fruit exports . one - sixth of all fruit exports from country y are orange exports . if country y generates $ 4.25 million from its orange exports , how much money does it generate from its yearly total of exports ?
Example Output: $ 127.5 m

Example Input: Problem: how long does a train 110 m long running at the speed of 72 km / hr takes to cross a bridge 136 m length ?
Example Output:
12.3 sec