$1836 \overset{2}{+} 640 \overset{1}{:} 8 = 1916$
1) 640 : 8 = 80
2) 1836 + 80 = 1916

Вычисления:
1)
$\snippet{name: long_division, x: 640, y: 8}$
2)
$\snippet{name: op_column, sign: '+', x: '1836', y: '80', z: '1916 '}$

$80 \overset{1}{*} 11 \overset{3}{-} 42558 \overset{2}{:} 519 = 798$
1) 80 * 11 = 880
2) 42558 : 519 = 82
3) 880 − 82 = 798

Вычисления:
1)
$\snippet{name: op_column, sign: 'x', x: '11  ', y: '80', z: '880 '}$
2)
$\snippet{name: long_division, x: 42558, y: 519}$
3)
$\snippet{name: op_column, sign: '-', x: '880', y: '82', z: '798 '}$

$344 \overset{1}{:} 4 \overset{2}{+} 2456 = 2542$
1) 344 : 4 = 86
2) 86 + 2456 = 2542

Вычисления:
1)
$\snippet{name: long_division, x: 344, y: 4}$
2)
$\snippet{name: op_column, sign: '+', x: '2456', y: '86', z: '2542 '}$

$684 \overset{1}{*} 245 \overset{3}{-} 675 \overset{2}{*} 246 = 167580 - 166050 = 1530$
1) 684 * 245 = 167580
2) 675 * 246 = 166050
3) 167580 − 166050 = 1530

Вычисления:
1)
$\snippet{name: column_multiplication, x: 684, y: 245}$
2)
$\snippet{name: column_multiplication, x: 675, y: 246}$
3)
$\snippet{name: op_column, sign: '-', x: '167580', y: '166050', z: '1530 '}$