(540 : 60 + 231) : 15 − 1000 : 8 : 25 = (9 + 231) : 15 − 125 : 25 = 240 : 15 − 5 = 16 − 5 = 11
$\snippet{name: long_division, x: 1000, y: 8}$
$\snippet{name: long_division, x: 240, y: 15}$
 
12900 : 100 − (500 − 350 : 7 * 9) : 10 = 129 − (500 − 50 * 9) : 10 = 129 − (500 − 450) : 10 = 129 − 50 : 10 = 129 − 5 = 124
 
(810 : 3 − 120) : 6 + 8 * (172 : 4 − 20) = (270 − 120) : 6 + 8 * (43 − 20) = 150 : 6 + 8 * 23 = 25 + 184 = 209
$\snippet{name: long_division, x: 810, y: 3}$
$\snippet{name: long_division, x: 172, y: 4}$
$\snippet{name: long_division, x: 150, y: 6}$
$\snippet{name: column_multiplication, x: 23, y: 8}$
 
(345720 − 72045 * 4) : 10 * 3 = (345720 − 288180) : 10 * 3 = 57540 : 10 * 3 = 5754 * 3 = 17262
$\snippet{name: column_multiplication, x: 72025, y: 4}$
$\snippet{name: op_column, sign: '-', x: '345720', y: '288180', z: '57540'}$
$\snippet{name: column_multiplication, x: 5754, y: 3}$
 
(25812 * 3 − 109 * 4) : 1000 = (77436 − 436) : 1000 = 77000 : 1000 = 77
$\snippet{name: column_multiplication, x: 25812, y: 3}$
$\snippet{name: column_multiplication, x: 109, y: 4}$