6000 : (20 * 5) * 6 = 6000 : 100 * 6 = 60 * 6 = 360
 
1000 : (90 : 9) * 100 = 1000 : 10 * 100 = 100 * 100 = 10000
 
(525 − 238) * 3 = 287 * 3 = 861
$\snippet{name: op_column, sign: '-', x: 525, y: 238, z: 287}$
 
$\snippet{name: column_multiplication, x: 287, y: 3}$
 
(517 − 450) * 9 = 67 * 9 = 603
$\snippet{name: op_column, sign: '-', x: 517, y: 450, z: 67}$
 
$\snippet{name: column_multiplication, x: 67, y: 9}$
 
(924 − 207) : 3 = 717 : 3 = 239
$\snippet{name: op_column, sign: '-', x: 924, y: 207, z: 717}$
 
$\snippet{name: long_division, x: 717, y: 3}$
 
(413 + 196) : 7 = 609 : 7 = 87
$\snippet{name: op_column, sign: '+', x: 413, y: 196, z: 609}$
 
$\snippet{name: long_division, x: 609, y: 7}$