720 * 400 − 195046 = 288000 − 195046 = 92954
1) $\snippet{name: column_multiplication, x: 72, y: 4}$;
2) $\snippet{name: op_column, sign: '-', x: '288000', y: '195046', z: '92954'}$.
 
83249 + 6710 * 80 = 83249 + 536800 = 620049
1) $\snippet{name: column_multiplication, x: 671, y: 8}$;
2) $\snippet{name: op_column, sign: '+', x: '83249', y: '536800', z: '620049'}$.
 
264037 + 516600 : 900 − 17080 = 264037 + 516600 : 900 − 17080 = 264037 + 574 − 17080 = 264611 − 17080 = 247531
1) $\snippet{name: long_division, x: 516600, y: 900}$;
2) $\snippet{name: op_column, sign: '+', x: '264037', y: '574', z: '264611'}$;
3) $\snippet{name: op_column, sign: '-', x: '264611', y: '17080', z: '247531'}$.
 
450430 − 196000 : 700 + 98764 = 450430 − 280 + 98764 = 450150 + 98764 = 548914
1) $\snippet{name: long_division, x: 196000, y: 700}$;
2) $\snippet{name: op_column, sign: '-', x: '450430', y: '280', z: '4550150'}$;
3) $\snippet{name: op_column, sign: '+', x: '450150', y: '98764', z: '548914'}$.