1939392 * 625
"explanation : trick : when multiplying with 5 n 5 n then put n zeros to the right of multiplicand and divide the number with 2 n 2 n so using this we can solve this question in much less time . 1939392 × 5 ( 4 ) = 1939392000016 = 1212120000 option b"
multiply(divide(1939392, 625), const_100)