227050 − (357 + 2406) : 3 = 27050 − 2763 : 3 = 27050 − 921 = 26129
$\snippet{name: op_column, sign: '+', x: 357, y: 2406, z: 2763}$
 
$\snippet{name: long_division, x: 2763, y: 3}$
 
$\snippet{name: op_column, sign: '-', x: 227050, y: 921, z: 26129}$
 
90000 − (80010 − 2604) : 2 = 90000 − 77406 : 2 = 90000 − 38703 = 51297
$\snippet{name: op_column, sign: '-', x: 80010, y: 2604, z: 77406}$
 
$\snippet{name: long_division, x: 77406, y: 2}$
 
$\snippet{name: op_column, sign: '-', x: 90000, y: 38703, z: 51297}$
 
(730 + 100 + 270) : 10 = ((730 + 270) + 100) : 10 = (1000 + 100) : 10 = 1100 : 10 = 110
 
(940 + 60) * 1000 = 1000 * 1000 = 1000000