Calculate 7 n / 8 without using division and multiplication operators | Javascript program to evaluate 7 n / 8 without using * and / ; Step 1 ) First multiply number by 7 i . e . 7 n = ( n << 3 ) - n * Step 2 ) Divide result by 8 ; Driver code
function multiplyBySevenByEight ( n ) { return ( ( n << 3 ) - n ) >> 3 ; } var n = 15 ; document . write ( multiplyBySevenByEight ( n ) ) ;