Task: Question Answering
Input (English): Problem: how many paying stones , each measuring 2 1 / 2 m * 2 m are required to pave a rectangular court yard 60 m long and 16 1 / 2 m board ? 
Options: a ) 99 , b ) 18 , c ) 16 , d ) 198 , e ) 15
Output (English): d