(160 + 290) : 9 = 450 : 9 = 50
1) $\snippet{name: op_column, sign: '+', x: '160', y: '290', z: '450'}$;
2) $\snippet{name: long_division, x: 450, y: 9}$.
 
(190 + 300) : 7 = 490 : 7 = 70
1) $\snippet{name: op_column, sign: '+', x: '190', y: '300', z: '490'}$;
2) $\snippet{name: long_division, x: 490, y: 7}$.
 
(180 + 380) : 8 = 560 : 8 = 70
1) $\snippet{name: op_column, sign: '+', x: '180', y: '380', z: '560'}$;
2) $\snippet{name: long_division, x: 560, y: 8}$.
 
(750 − 190) : 4 = 560 : 4 = 140
1) $\snippet{name: op_column, sign: '-', x: '750', y: '190', z: '560'}$;
2) $\snippet{name: long_division, x: 560, y: 4}$.
 
(900 − 180) : 6 = 720 : 6 = 120
1) $\snippet{name: op_column, sign: '-', x: '900', y: '180', z: '720'}$;
2) $\snippet{name: long_division, x: 720, y: 6}$.
 
(860 − 290) : 3 = 570 : 3 = 190
1) $\snippet{name: op_column, sign: '-', x: '860', y: '290', z: '570'}$;
2) $\snippet{name: long_division, x: 570, y: 3}$.
 
340 * 2 − (810 : 9 + 110) = 680 − (90 + 110) = 680 − 200 = 480
1) $\snippet{name: long_division, x: 810, y: 9}$;
2) $\snippet{name: op_column, sign: '+', x: '90', y: '110', z: '200'}$;
3) $\snippet{name: column_multiplication, x: 340, y: 2}$;
4) $\snippet{name: op_column, sign: '-', x: '680', y: '200', z: '480'}$.
 
(560 : 8 + 330 : 3) * 5 = (70 + 110) * 5 = 180 * 5 = 900
1) $\snippet{name: long_division, x: 560, y: 8}$;
2) $\snippet{name: long_division, x: 330, y: 3}$;
3) $\snippet{name: op_column, sign: '+', x: '70', y: '110', z: '180'}$;
4) $\snippet{name: column_multiplication, x: 180, y: 5}$.
 
999 − 200 * (72 : 18) = 999 − 200 * 4 = 999 − 800 = 199
1) 72 : 18 = 4;
2) 200 * 4 = 800;
3) 999 − 800 = 199.