55987 * (59 * 90 − 177 * 30) = 55987 * (5310 − 5310) = 55987 * 0 = 0
$\snippet{name: column_multiplication, x: 59, y: 9}$
$\snippet{name: column_multiplication, x: 177, y: 3}$
 
73280 − 7328 + 30280 = 65952 + 30280 = 96232
$\snippet{name: op_column, sign: '-', x: '73280', y: '7328', z: '65952'}$
$\snippet{name: op_column, sign: '+', x: '65952', y: '30280', z: '96232'}$
 
89500 + 47 * 300 − 3600 = 89500 + 14100 − 3600 = 103600 − 3600 = 100000
$\snippet{name: column_multiplication, x: 47, y: 3}$
 
4 * (8725 − 7852) * 100 − 9200 = 4 * 873 * 100 − 9200 = 3492 * 100 − 9200 = 349200 − 9200 = 340000
$\snippet{name: op_column, sign: '-', x: '8725', y: '7852', z: '873'}$
$\snippet{name: column_multiplication, x: 873, y: 4}$
 
(294511 − 286411) : 27 − 300 = 8100 : 27 − 300 = 300 − 300 = 0
$\snippet{name: op_column, sign: '-', x: '294511', y: '286411', z: '8100'}$
$\snippet{name: long_division, x: 8100, y: 27}$
 
(98 + 333 * 10 − 3298) * 100 = (98 + 3330 − 3298) * 100 = (3428 − 3298) * 100 = 130 * 100 = 13000
$\snippet{name: op_column, sign: '+', x: '3330', y: '98', z: '3428'}$
$\snippet{name: op_column, sign: '-', x: '3428', y: '3298', z: '130'}$