500 − 180 : (90 : 45) + 304;
(90 + 510 : 30) * (80 : 4 * 5);
100000 − 284 * 235;
9999 + 406 * 207.

500 − 180 : (90 : 45) + 304 = 500 − 180 : 2 + 30 = 500 − 90 + 30 = 410 + 30 = 440
(90 + 510 : 30) * (80 : 4 * 5) = (90 + 17) * (20 * 5) = 107 * 100 = 10700
100000 − 284 * 235 = 100000 − 284 * 235 = 100000 − 66740 = 33260
1) $\snippet{name: column_multiplication, x: 284, y: 235}$;
2) $\snippet{name: op_column, sign: '-', x: '100000', y: '66740', z: '33260'}$.
9999 + 406 * 207 = 9999 + 84042 = 94041
1) $\snippet{name: column_multiplication, x: 406, y: 207}$;
2) $\snippet{name: op_column, sign: '+', x: '9999', y: '84042', z: '94041'}$.