Task: Question Answering
Input (English): Problem: a room 4 m 47 cm long and 7 m 77 cm broad is to be paved with square tiles . find the least number of square tiles required to cover the floor . 
Options: a ) 38636 , b ) 38640 , c ) 38647 , d ) 38591 , e ) 38675
Output (English): d