I need a formula that will take a length and width of a product and times it by 2 (to make a door) and then divide it to show how many 6 meter lengths of that product are required to make the door. I have it that it works up until 9 quantity but after that it doesn't calculate correctly. I must mention the length and with relate back to another cell where you can change the length and width to what size of door you are making and the length comes from another tab within the excel workbook. ie for 1 door you require 3 lengths so for 10 doors you would require 30 lengths but it calculates at 28 lengths
Solved by T. S. in 19 mins