1) Add up the two field areas: 22 1/2 acres + 38 1/4 acres = 60 3/4 acres total.
2) Multiply this result by the conversion factor "4/5 quart per acre:"
(243/4 acres)(4/5 quart per acre) = 48.6 quarts.
48.6 quarts will treat the two areas totalling 60 3/4 acres.