15 * 18 : 9 + 361 – 954 : 3 = 73
64 * (8 + 2) – 549 + 36 * 9 = 415
Вычисления:
15 * 18 : 9 + 361 – 954 : 3 = 73
1)

2)
$\snippet{name: long_division, x: 270, y: 9}$
3)
$\snippet{name: long_division, x: 954, y: 3}$
4)
$\snippet{name: op_column, sign: '+', x: '30', y: '361', z: '391'}$
5)
$\snippet{name: op_column, sign: '-', x: '391', y: '318', z: '73'}$
64 * (8 + 2) – 549 + 36 * 9 = 415
1) 8 + 2 = 10
2) 64 * 10 = 640
3)
$\snippet{name: op_column, sign: '‧', x: '36', y: '9', z: '324'}$
4)
$\snippet{name: op_column, sign: '+', x: '640', y: '549', z: '91'}$
5)
$\snippet{name: op_column, sign: '+', x: '91', y: '324', z: '415'}$