The values 90, 80, 70 and 10, 20, 30 have a lot to do with the program because im trying to find the highest possible combination of 9n, 8n, and 7n so it'd be (90 + n) * (80 + n) * (70 + n) where every n must be either 4, 5, or 6. So far the only error I can actually see is in the line of code