There are 5 pounds, and a remainder.
Assuming each can weighs 0.5 pounds (for example, a standard 12 oz can), there would be approximately 81 cans in 40.5 pounds.
There are approximately 178.57 pounds in 81 kilograms.
1975.341866 oz = 81 kg
3.25 oz = 0.2031 pounds.
50 oz is 3.125 pounds
1.25 pounds is 20 oz.
272 oz is 17 pounds.
156 oz is 9.75 pounds.
30 oz = 1.875 pounds.
47 oz is 2.9375 pounds.
There are 44 pounds in 704 oz
84 oz = 5.25 pounds