49 + 26 * (54 − 27) = 49 + 26 * 27 = 49 + 702 = 751
1) $\snippet{name: op_column, sign: '-', x: 54, y: 27, z: 27}$
2) $\snippet{name: column_multiplication, x: 26, y: 27}$
3) $\snippet{name: op_column, sign: '+', x: 49, y: 702, z: 751}$

36 : 9 + 18 * 5 = 4 + 90 = 94
1) $\snippet{name: long_division, x: 36, y: 9}$
2) $\snippet{name: column_multiplication, x: 18, y: 5}$
3) $\snippet{name: op_column, sign: '+', x: 4, y: 90, z: 94}$

(801 − 316) * 29 = 485 * 29 = 14065
1) $\snippet{name: op_column, sign: '-', x: 801, y: 316, z: 485}$
2) $\snippet{name: column_multiplication, x: 485, y: 29}$

(488 + 808) : 18 = 1296 : 18 = 72
1) $\snippet{name: op_column, sign: '-', x: 488, y: 808, z: 1296}$
2) $\snippet{name: long_division, x: 1296, y: 18}$