900 − 688 : 4 = 900 − 172 = 728
$\snippet{name: long_division, x: 688, y: 4}$
 
$\snippet{name: op_column, sign: '-', x: 900, y: 172, z: 728}$
 
(900 − 688) : 4 = 212 : 4 = 53
$\snippet{name: op_column, sign: '-', x: 900, y: 688, z: 212}$
 
$\snippet{name: long_division, x: 212, y: 4}$
 
369 * 2 : 3 = 738 : 3 = 246
$\snippet{name: column_multiplication, x: 369, y: 2}$
 
$\snippet{name: long_division, x: 738, y: 3}$
 
328 * 3 : 8 = 984 : 8 = 123
$\snippet{name: column_multiplication, x: 328, y: 3}$
 
$\snippet{name: long_division, x: 984, y: 8}$
 
(90 + 60) * 5 * 0 = 150 * 5 * 0 = 0
 
660 − 60 : 6 * 1 = 660 − 10 * 1 = 660 − 10 = 650