i have a huge bed - sheet of 1 meter long . i want to cuts this role into pieces of 20 centimeter long cloth . how long will it take me to cut the bed sheet if each 20 centimeter cut took me 5 minutes ?
b it will take 49 cuts not 50 . so 49 * 5 = > 245 minutes
multiply(subtract(add(add(20, 20), const_10), const_1), 5)