Найдите значение выражения: (1 1/12 + 1 1/4) * 1 19/56 + 2 5/8 * 1 3/7 * 1 1/9.

(1 1/12+1 1/4)*1 19/56+2 5/8 * 1 3/7 * 1 1/9=(13/12 + 5/4) * 75/56 + 21/8 * 10/7 * 10/9=(13/12 + 5/4) * 75/56 + 21/8 * 10/7 * 10/9=(13+15)/12 * 75/56 + 1/2 * 5/1 * 5/3=28/12 * 75/56 + 25/6=1/4 * 25/2 + 25/6=25/8 + 25/6=(25*3+25*4)/24=175/24 = 7 7/24