320 : 40 = 8;
 
570 : 30 = 19;
 
354 : 3 + 512 : 4 = 118 + 128 = 246;
$\snippet{name: long_division, x: 354, y: 3}$
 
$\snippet{name: long_division, x: 512, y: 4}$
 
$\snippet{name: op_column, sign: '+', x: 118, y: 128, z: 246}$
 
656 : 8 − 441 : 9 = 82 + 49 = 131;
$\snippet{name: long_division, x: 656, y: 8}$
 
$\snippet{name: long_division, x: 441, y: 9}$
 
$\snippet{name: op_column, sign: '+', x: 82, y: 49, z: 131}$
 
9 * 8 : 12 = 72 : 12 = 6;
 
56 * 6 : 7 = 336 : 7 = 48;
$\snippet{name: column_multiplication, x: 56, y: 6}$
 
$\snippet{name: long_division, x: 336, y: 7}$
 
400 : 100 − 40 : 10 = 4 − 4 = 0;
 
250 * 4 − 100 * 8 = 1000 − 800 = 200.