936 : 24 − 2204 : 58 = 39 − 38 = 1
1) $\snippet{name: long_division, x: 936, y: 24}$
2) $\snippet{name: long_division, x: 2204, y: 58}$
3) $\snippet{name: op_column, sign: '-', x: 39, y: 38, z: 1}$

5481 : 27 + 23 * 27 = 203 + 621 = 824
1) $\snippet{name: long_division, x: 5481, y: 27}$
2) $\snippet{name: column_multiplication, x: 23, y: 27}$
3) $\snippet{name: op_column, sign: '+', x: 203, y: 621, z: 824}$

3000 − (1085 − 833) : 42 = 3000 − 252 : 42 = 3000 − 6 = 2994
1) $\snippet{name: op_column, sign: '-', x: 1085, y: 833, z: 252}$
2) $\snippet{name: long_division, x: 252, y: 42}$
3) $\snippet{name: op_column, sign: '-', x: 3000, y: 6, z: 2994}$

(1248 + 652) * (1423 − 1373) = 1900 * 50 = 95000
1) $\snippet{name: op_column, sign: '+', x: 1248, y: 652, z: 1900}$
2) $\snippet{name: op_column, sign: '-', x: 1423, y: 1373, z: 50}$
3) $\snippet{name: column_multiplication, x: 1900, y: 50}$