Considering this case purely mathematically, you should be wrong: factories produce 7 days a week, 2 times a day, so the formula should be < 7 * 2 * sum of slots in all flight catering facilities> so it should be an even number and actually multiple of 2 and 7. So it can't be 49 - am I wrong?Considering that my airport produces only 49 flight catering items in a week, I knew I would need to count on neighbors for help.