code: public int divide(int x , int y ) {
  		if( y == 0 )
  			throw new ArithmeticException("Divide by zero");
  		if( x == 0 )
  			return 0;
  
  		return exp[ log[x] + max_value - log[y] ];
  	}
docs: Computes the following the value of output such that:<br>
  <p>divide(multiply(x,y),y)==x for any x and any nonzero y.</p>