The rodent population was 80,000 if you've ever seen the movie ratatouille you know that rat Spohn like crazy
The answer is 512 ! To find this answer you can try 4*2 8 times since 4 is multipled by 2 continuously as a pattern.
20 cans in kilograms = 336 grams * 20 cans / 1000 = 6.72 kg
