a) 261 : 7 = 37
37 ------ 7 | 261 -21 --- 51 -49 --- 2
г) 1742 : 13 = 134
134 ------ 13 | 1742 -13 --- 44 -39 --- 52 -52 --- 0
Ответ: а) 37, г) 134