(318 * 207 − 64934) * 276 + 604 * 88 = (65826 − 64934) * 276 + 53152 = 892 * 276 + 53152 = 246192 + 53152 = 299344
1) $\snippet{name: column_multiplication, x: 318, y: 207}$
2) $\snippet{name: op_column, sign: '-', x: 65826, y: 64934, z: 892}$
3) $\snippet{name: column_multiplication, x: 892, y: 276}$
4) $\snippet{name: column_multiplication, x: 604, y: 88}$
5) $\snippet{name: op_column, sign: '+', x: 246192, y: 53152, z: 299344}$

869 * (61124 − 488 * 125) − 509 * 74 = 869 * (61124 − 61000) − 37666 = 869 * 124 − 37666 = 107756 − 37666 = 70090
1) $\snippet{name: column_multiplication, x: 488, y: 125}$
2) $\snippet{name: op_column, sign: '-', x: 61124, y: 61000, z: 124}$
3) $\snippet{name: column_multiplication, x: 869, y: 124}$
4) $\snippet{name: column_multiplication, x: 509, y: 74}$
5) $\snippet{name: op_column, sign: '-', x: 107756, y: 37666, z: 70090}$