$312 \overset{1}{:} 13 \overset{4}{+} 17 \overset{2}{*} 52 \overset{5}{-} 90 \overset{3}{:} 2 = 863$
1) 312 : 13 = 24
2) 17 * 52 = 884
3) 90 : 2 = 45
4) 24 + 884 = 908
5) 908 − 45 = 863

Вычисления:
1)
$\snippet{name: long_division, x: 312, y: 13}$
2)
$\snippet{name: column_multiplication, x: 17, y: 52}$
3)
$\snippet{name: long_division, x: 90, y: 2}$
4)
$\snippet{name: op_column, sign: '+', x: '884', y: '24', z: '908 '}$
5)
$\snippet{name: op_column, sign: '-', x: '908', y: '45', z: '863 '}$

$(312 \overset{1}{:} 13 \overset{3}{+} 17 \overset{2}{*} 52) \overset{5}{-} 90 \overset{4}{:} 2 = 863$
1) 312 : 13 = 24
2) 17 * 52 = 884
3) 24 + 884 = 908
4) 90 : 2 = 45
5) 908 − 45 = 863

Вычисления:
1)
$\snippet{name: long_division, x: 312, y: 13}$
2)
$\snippet{name: column_multiplication, x: 17, y: 52}$
3)
$\snippet{name: op_column, sign: '+', x: '884', y: '24', z: '908 '}$
4)
$\snippet{name: long_division, x: 90, y: 2}$
5)
$\snippet{name: op_column, sign: '-', x: '908', y: '45', z: '863 '}$

$312 \overset{3}{:} 13 \overset{5}{+} (17 \overset{1}{*} 52 \overset{2}{-} 90) \overset{4}{:} 2 = 421$
1) 17 * 52 = 884
2) 884 − 90 = 794
3) 312 : 13 = 24
4) 794 : 2 = 397
5) 24 + 397 = 421

Вычисления:
1)
$\snippet{name: column_multiplication, x: 17, y: 52}$
2)
$\snippet{name: op_column, sign: '-', x: '884', y: '90', z: '794 '}$
3)
$\snippet{name: long_division, x: 312, y: 13}$
4)
$\snippet{name: long_division, x: 794, y: 2}$
5)
$\snippet{name: op_column, sign: '+', x: '397', y: '24', z: '421 '}$

$312 \overset{3}{:} 13 \overset{5}{+} 17 \overset{4}{*} (52 \overset{2}{-} 90 \overset{1}{:} 2) = 143$
1) 90 : 2 = 45
2) 52 − 45 = 7
3) 312 : 13 = 24
4) 17 * 7 = 119
5) 24 + 119 = 143

Вычисления:
1)
$\snippet{name: long_division, x: 90, y: 2}$
2)
$\snippet{name: op_column, sign: '-', x: '52', y: '45', z: '7 '}$
3)
$\snippet{name: long_division, x: 312, y: 13}$
4)
$\snippet{name: column_multiplication, x: 17, y: 7}$
5)
$\snippet{name: op_column, sign: '+', x: '119', y: '24', z: '143 '}$