How would I answer this: How many minutes are in a 30-day month use vertical multiplication to get the right answer

Aphoto of a painting measured 13 x 17 inches the scale of the photo to the original painting is 1 inch to 3 inches. what is the size of this painting

8000 + 8800 + 8000 + 8 million + 80 trillion + another a katrillion equals

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2