$(690 \overset{1}{:} 23 \overset{2}{-} 5) \overset{5}{*} (90 \overset{4}{-} 3 \overset{3}{*} 26) = 300$
1) 690 : 23 = 30
2) 30 − 5 = 25
3) 3 * 26 = 78
4) 90 − 78 = 12
5) 25 * 12 = 300
Ответ:

Вычисления:
1)
$\snippet{name: long_division, x: 690, y: 23}$
3)
$\snippet{name: column_multiplication, x: 26, y: 3}$
4)
$\snippet{name: op_column, sign: '-', x: '90', y: '78', z: '12 '}$
5)
$\snippet{name: column_multiplication, x: 25, y: 12}$