12 * x = 112,8
x = 112,8 : 12
x = 9,4
$\snippet{name: long_division, x: 112.8, y: 12, decimal: true}$

178,5 : x = 21
x = 178,5 : 21
x = 8,5
$\snippet{name: long_division, x: 178.5, y: 21, decimal: true}$

x : 3,2 = 10,5
x = 10,5 * 3,2
x = 33,6
$\snippet{name: column_multiplication, x: 10.5, y: 3.2}$

y + 27y = 0,952
28y = 0,952
y = 0,952 : 28
y = 0,034
$\snippet{name: long_division, x: 0.952, y: 28, decimal: true}$

33m − m = 102,4
34m = 102,4
m = 102,4 : 34
m = 3,01
$\snippet{name: long_division, x: 102.4, y: 34, decimal: true}$

2,7x − 1,3x + 3,6x = 2
5x = 2
x = 2 : 5
x = 0,4
$\snippet{name: long_division, x: 2, y: 5, decimal: true}$