when 1 / 20 % of 6,000 is subtracted from 1 / 10 of 6,000 , the difference is
"1 / 20 % of 6000 = 3 1 / 10 of 6000 = 600 600 - 3 = 598 ans : d"
multiply(inverse(10), multiply(multiply(const_100, 10), add(const_4, const_4)))