(214 * 104 + 7544) * 35 − 508 * 722 = (22256 + 7544) * 35 − 366776 = 29800 * 35 − 366776 = 1043000 − 366776 = 676224
1) $\snippet{name: column_multiplication, x: 214, y: 104}$
2) $\snippet{name: op_column, sign: '+', x: 22256, y: 7544, z: 29800}$
3) $\snippet{name: column_multiplication, x: 29800, y: 35}$
4) $\snippet{name: column_multiplication, x: 508, y: 722}$
5) $\snippet{name: op_column, sign: '-', x: 1043000, y: 366776, z: 676224}$

647 * (36900 − 255 * 144) − 318 * 92 = 647 * (36900 − 36720) − 29256 = 647 * 180 − 29256 = 116460 − 29256 = 87204
1) $\snippet{name: column_multiplication, x: 255, y: 144}$
2) $\snippet{name: op_column, sign: '-', x: 36900, y: 36720, z: 180}$
3) $\snippet{name: column_multiplication, x: 647, y: 180}$
4) $\snippet{name: column_multiplication, x: 318, y: 92}$
5) $\snippet{name: op_column, sign: '-', x: 116460, y: 29256, z: 87204}$