306 - 287 = 19
86 070 \(\div\) 19
86070 | 19 - 76 |----- ----- | 4530 100 - 95 ----- 57 - 57 ----- 00 - 0 ----- 0
86 070 \(\div\) 19 = 4530
79 420 \(\div\) 4
79420 | 4 - 4 |----- ----- | 19855 39 - 36 ----- 34 - 32 ----- 22 - 20 ----- 20 - 20 ----- 0
79 420 \(\div\) 4 = 19855
4530 + 19855 = 24385
Ответ: 24385