I understand some of this but the other part I don't. The part I don't understand is how to get 7/12 on the second line where it says 20-2. I know for the first line which is 20-1 its from Aug - December so that's 5 months so it would be 5/12 x 648 but how to get to 7/12 x 648 and all im really asking is how to get to the number 7

Reviewr Exercise ll Year Insurance Expense Prepaid Insurance (Dec. 31) '20 1 5/12 x 6:18 = 270 5 378.00 '20 2 7:12 x 548 = 378 S - Total Expense S 6&8 A one-year insurance policy was purchased on Aug. 1, 20-1 for 56:18 A. Calculate the value of the prepaid insurance for this policy as of Dec 31, 20-1 B. Calculate the portion of the cost of this insurance policy to be charged as an expenses to each of the years ended December 31, 20-1 and 20-2