Task: Question Answering
Input (English): Problem: how many bricks , each measuring 25 cm x 11.25 cm x 6 cm , will be needed to build a wall of 7.5 m x 6 m x 22.5 cm ? 
Options: a ) 6000 , b ) 6410 , c ) 6440 , d ) 6500 , e ) 6800
Output (English): a