300. 72 960 : 19 87 220 : 14 260 ⋅ 403 - (568 - 5 - 1840) 671 ⋅ 223 + (6000 - 87 ⋅ 40)

Решение:

1. 72 960 : 19

   3840
  ______
19|72960
  -57
  ----
   159
  -152
  ----
     76
    -76
    ----
      00
     - 0
     ---
       0

2. 87 220 : 14

   6230
  ______
14|87220
  -84
  ----
    32
   -28
   ----
     42
    -42
    ----
      00
     - 0
     ---
       0

3. 260 ⋅ 403 - (568 - 5 - 1840)

1. 260 ⋅ 403 = 104780
2. 568 - 5 = 563
3. 563 - 1840 = -1277
4. 104780 - (-1277) = 104780 + 1277 = 106057

4. 671 ⋅ 223 + (6000 - 87 ⋅ 40)

1. 671 ⋅ 223 = 149633
2. 87 ⋅ 40 = 3480
3. 6000 - 3480 = 2520
4. 149633 + 2520 = 152153

Финальный ответ:

Ответ: 3840, 6230, 106057, 152153