16 * 12 + 34 * 17 − 28 * 20 = 210
909 : 9 − (520 − 502) * 13 : 6 = 62
755 : 5 + 18 * 18 − (89 − 73) * 19 = 171
(22 * 44 − 11 * 20 − 10 * 10) : 8 = 81
Вычисления:
16 * 12 + 34 * 17 − 28 * 20 = 210
1)

2)

3)

4)
$\snippet{name: op_column, sign: '+', x: '192', y: '578', z: '770'}$
5)
$\snippet{name: op_column, sign: '-', x: '770', y: '560', z: '210'}$
909 : 9 − (520 − 502) * 13 : 6 = 62
1)
$\snippet{name: op_column, sign: '-', x: '520', y: '502', z: '18'}$
2)

3)
$\snippet{name: long_division, x: 234, y: 6}$
4)
$\snippet{name: long_division, x: 909, y: 9}$
5)
$\snippet{name: op_column, sign: '-', x: '101', y: '39', z: '62'}$
755 : 5 + 18 * 18 − (89 − 73) * 19 = 171
1)
$\snippet{name: op_column, sign: '-', x: '89', y: '73', z: '16'}$
2)

3)
$\snippet{name: long_division, x: 755, y: 5}$
4)

5)
$\snippet{name: op_column, sign: '+', x: '151', y: '324', z: '475'}$
6)
$\snippet{name: op_column, sign: '-', x: '475', y: '304', z: '171'}$
(22 * 44 − 11 * 20 − 10 * 10) : 8 = 81
1)

2)

3)

4)
$\snippet{name: op_column, sign: '-', x: '968', y: '220', z: '748'}$
5)
$\snippet{name: op_column, sign: '-', x: '748', y: '100', z: '648'}$
6)
$\snippet{name: long_division, x: 648, y: 8}$