Помогите решить номер 666 б,г,е

1) 10X = 0.372
X = 0.372 : 10
X = 0.0372
..............................................
2) 1000X = 3267.39
X = 3267.39 : 1000
X = 3.26739
.........................................
3) 100X = 5
X = 5 : 100
X = 0.05

Спасибо;)