521600 : 8 = 65200
$\snippet{name: long_division, x: 521600, y: 8}$
 
102018 : 6 = 17003
$\snippet{name: long_division, x: 102018, y: 6}$
 
2907 * 3 * 10 + 5403 = 8721 * 10 + 5403 = 87210 + 5403 = 92613
$\snippet{name: column_multiplication, x: 2907, y: 3}$
$\snippet{name: op_column, sign: '+', x: '87210', y: '5403', z: '92613'}$
 
780 * 5 * 100 − 20471 = 3900 * 100 − 20471 = 390000 − 20471 = 369529
$\snippet{name: column_multiplication, x: 780, y: 5}$
$\snippet{name: op_column, sign: '-', x: '390000', y: '20471', z: '369529'}$
 
40200 : 6 = 6700
$\snippet{name: long_division, x: 40200, y: 6}$
 
36040 : 5 = 7208
$\snippet{name: long_division, x: 36040, y: 5}$