How do you confirm this?

Question

1500000 square miles to 7334000 square miles in six months is growing at about 22 square miles a minute.

Answer 1

7334000 - 1500000 = 5 834 000

5 834 000 / 182.5 = 31 967.1233 square miles per day

31 967.1233/(24*60) = 22.1993912