(68 + 49) * 4 − 117 * 5 : 9 = 117 * 4 − 585 : 9 = 468 − 65 = 403
$\snippet{name: op_column, sign: '+', x: 68, y: 49, z: 117}$
 
$\snippet{name: column_multiplication, x: 117, y: 4}$
 
$\snippet{name: column_multiplication, x: 117, y: 5}$
 
$\snippet{name: long_division, x: 585, y: 9}$
 
$\snippet{name: op_column, sign: '-', x: 468, y: 65, z: 403}$
 
(187 + 369) : 4 + 124 * 6 : 8 = 556 : 4 + 744 : 8 = 139 + 93 = 232
$\snippet{name: op_column, sign: '+', x: 187, y: 369, z: 556}$
 
$\snippet{name: long_division, x: 556, y: 4}$
 
$\snippet{name: column_multiplication, x: 124, y: 6}$
 
$\snippet{name: long_division, x: 744, y: 8}$
 
$\snippet{name: op_column, sign: '+', x: 139, y: 93, z: 232}$
 
(76 + 58) * 3 + (218 + 247) : 5 = 134 * 3 + 465 : 5 = 402 + 93 = 495
$\snippet{name: op_column, sign: '+', x: 76, y: 58, z: 134}$
 
$\snippet{name: op_column, sign: '+', x: 218, y: 247, z: 465}$
 
$\snippet{name: column_multiplication, x: 134, y: 3}$
 
$\snippet{name: long_division, x: 465, y: 5}$
 
$\snippet{name: op_column, sign: '+', x: 402, y: 93, z: 495}$
 
(389 + 276) : 7 − 135 * 4 : 6 = 665 : 7 − 540 : 6 = 95 − 90 = 5
$\snippet{name: op_column, sign: '+', x: 389, y: 276, z: 665}$
 
$\snippet{name: long_division, x: 665, y: 7}$
 
$\snippet{name: column_multiplication, x: 135, y: 4}$
 
$\snippet{name: long_division, x: 540, y: 6}$
 
90 − 90 = 5