18,61 + 7,54 + 3,4 = 26,15 + 3,4 = 29,55
1)
$\snippet{name: op_column, sign: '+', x: 18.61, y: 7.54, z: 26.15}$
2)
$\snippet{name: op_column, sign: '+', x: 26.15, y: '3.40', z: 29.55}$

86,58 + 32,6 + 5,079 = 119,18 + 5,079 = 124,259
1)
$\snippet{name: op_column, sign: '+', x: 86.58, y: '32.60', z: 119.18}$
2)
$\snippet{name: op_column, sign: '+', x: '119.180', y: 5.079, z: 124.259}$

28,964 + 51,16 + 48,036 = 80,124 + 48,036 = 128,16
1)
$\snippet{name: op_column, sign: '+', x: 28.964, y: '51.160', z: 80.124}$
2)
$\snippet{name: op_column, sign: '+', x: 80.124, y: 48.036, z: '128.160'}$

84,25 + 72,844 + 17,156 + 16,85 = 157,094 + 17,156 + 16,85 = 174,25 + 16,85 = 191,1
1)
$\snippet{name: op_column, sign: '+', x: '84.250', y: 72.844, z: 157.094}$
2)
$\snippet{name: op_column, sign: '+', x: 157.094, y: 17.156, z: '174.250'}$
3)
$\snippet{name: op_column, sign: '+', x: 174.25, y: 16.85, z: '191.10'}$

26,836 − 7,59 − 12,6 − 3,5801 = 19,246 − 12,6 − 3,5801 = 6,646 − 3,5801 = 3,065
1)
$\snippet{name: op_column, sign: '-', x: 26.836, y: '7.590', z: 19.246}$
2)
$\snippet{name: op_column, sign: '-', x: 19.246, y: '12.600', z: 6.646}$
3)
$\snippet{name: op_column, sign: '-', x: '6.6460', y: 3.5801, z: 3.065}$

489,2 − (164,4 + 92,16 − 138,254) = 489,2 − (256,56 − 138,254) = 489,2 − 118,306 = 370,894
1)
$\snippet{name: op_column, sign: '+', x: '164.40', y: 92.16, z: 256.56}$
2)
$\snippet{name: op_column, sign: '-', x: '256.560', y: 138.254, z: 118.306}$
3)
$\snippet{name: op_column, sign: '-', x: '489.200', y: 118.306, z: 370.894}$