605 + 570 + 450 + 304 + 299 = 1175 + 450 + 304 + 299 = 1625 + 304 + 299 = 1929 + 299 = 2228
1) $\snippet{name: op_column, sign: '+', x: '605', y: '570', z: '1175'}$;
2) $\snippet{name: op_column, sign: '+', x: '1175', y: '450', z: '1625'}$;
3) $\snippet{name: op_column, sign: '+', x: '1625', y: '304', z: '1929'}$;
4) $\snippet{name: op_column, sign: '+', x: '1929', y: '299', z: '2228'}$.

591 + 483 + 307 + 254 + 628 = 1074 + 307 + 254 + 628 = 1381 + 254 + 628 = 1635 + 628 = 2263
1) $\snippet{name: op_column, sign: '+', x: '591', y: '483', z: '1074'}$;
2) $\snippet{name: op_column, sign: '+', x: '1074', y: '307', z: '1381'}$;
3) $\snippet{name: op_column, sign: '+', x: '1381', y: '254', z: '1635'}$;
4) $\snippet{name: op_column, sign: '+', x: '1635', y: '628', z: '2263'}$.