(4 1/6 + 1,25 / 3,5 - 1/13) * (2,6 - 1 2/3 / 0,2 + 1/30 * 3,2) / (0,85 / 7/12 - 0,375 - 0,08) = (25/6 + 5/4 / 7/2 - 1/13) * (13/5 - 5/3 / 1/5 + 1/30 * 16/5) / (17/20 / 7/12 - 3/8 - 2/25) = (25/6 + 5/14 - 1/13) * (13/5 - 25/3 + 8/75) / (51/35 - 3/8 - 2/25) = (2275/546 + 195/546 - 42/546) * (195/75 - 625/75 + 8/75) / (2040/1400 - 525/1400 - 112/1400) = (2426/546) * (-422/75) / (1403/1400) =
(2426 * 422) / (546*75) / (1403 /1400) = (2426 *422 * 1400) / (546 * 75 * 1403) = 28665616 / 1149057 = 24 1088248/1149057