386/11 : 2 = (38 * 11 + 6) / 11 : 2 = (418 + 6) / 11 : 2 = 424 / 11 : 2 = 424 / 11 * 1/2 = 424 / (11 * 2) = 424 / 22 = 212 / 11 = 19 3/11
Ответ: 19 3/11