603 * 84 + 2536 = 50652 + 2536 = 53188
1) $\snippet{name: column_multiplication, x: 603, y: 84}$
2) $\snippet{name: op_column, sign: '+', x: 50652, y: 2536, z: 53188}$

318 * 56 − 5967 = 17808 − 5967 = 11841
1) $\snippet{name: column_multiplication, x: 318, y: 56}$
2) $\snippet{name: op_column, sign: '-', x: 17808, y: 5967, z: 11841}$

64 * 96 − 77 = 6144 − 77 = 6067
1) $\snippet{name: column_multiplication, x: 64, y: 96}$
2) $\snippet{name: op_column, sign: '-', x: 6144, y: 77, z: 6067}$

64 * (96 − 77) = 64 * 19 = 1216
1) $\snippet{name: op_column, sign: '-', x: 96, y: 77, z: 19}$
2) $\snippet{name: column_multiplication, x: 64, y: 19}$