(921 * 8 − 25290 : 6) : 3 − 251 = (7368 − 4215) : 3 − 251 = 3153 : 3 − 251 = 1051 − 251 = 800
1) $\snippet{name: column_multiplication, x: 921, y: 8}$;
2) $\snippet{name: long_division, x: 25290, y: 6}$;
3) $\snippet{name: op_column, sign: '-', x: '7368', y: '4215', z: '3153'}$;
4) $\snippet{name: long_division, x: 3153, y: 3}$;
5) $\snippet{name: op_column, sign: '-', x: '1051', y: '251', z: '800'}$.
 
10 * (23067 : 9 + 55560 : 8) : 4 = 10 * (2563 + 6945) : 4 = 10 * 9508 : 4 = 95080 : 4 = 23770
1) $\snippet{name: long_division, x: 23067, y: 9}$;
2) $\snippet{name: long_division, x: 55560, y: 8}$;
3) $\snippet{name: op_column, sign: '+', x: '2563', y: '6945', z: '9508'}$;
4) 10 * 9508 = 95080;
5) $\snippet{name: long_division, x: 95080, y: 4}$.
 
(714 * 3 − 1142) * (25428 : 4 − 50382 : 9) = (2142 − 1142) * (6357 − 5598) = 1000 * 759 = 759000
1) $\snippet{name: column_multiplication, x: 714, y: 3}$;
2) 2142 − 1142 = 1000;
3) $\snippet{name: long_division, x: 25428, y: 4}$;
4) $\snippet{name: long_division, x: 50382, y: 9}$;
5) $\snippet{name: op_column, sign: '-', x: '6357', y: '5598', z: '759'}$;
6) 1000 * 759 = 759000.