Read this I have you some hint that should help you a bit don’t mode the writing lol
6 km is larger than 54,000 mm
If you want to know the total, it would be 15 cups and 6 oz. One cup is 8 oz, so 6 oz would have to stand next to 15 cups.
If you want to know the total amount of ounces, it would be 126 ounces.
This information is only accurate if you are using USA measurements.
Hope this helps! Have a happy holiday!