0,72 + 3,018 = 3,738
$\snippet{name: op_column, sign: '+', x: 0.72, y: 3.018, z: 3.738}$

4 − 2,8 = 1,2
$\snippet{name: op_column, sign: '-', x: 4, y: 2.8, z: 1.2}$

1,8 * 0,3 = 0,54
$\snippet{name: column_multiplication, x: 1.8, y: 0.3}$

5,4 : 6 = 0,9
$\snippet{name: long_division, x: 54, y: 60, decimal: true}$

72 : 0,09 = 800
$\snippet{name: long_division, x: 7200, y: 9, decimal: true}$

9 : 4 = 2,25
$\snippet{name: long_division, x: 9, y: 4, decimal: true}$