When a number
is written in base ten notation it is referred to as a decimal number.
The values of the places to the left of the decimal point (or comma
in some countries) increase by a factor of ten, from units to tens,
hundreds, thousands, tens of thousands, hundreds of thousands, thousands
of thousands millions and so on. To the right of the decimal point
the values of places decrease by a factor of ten from tenths to
hundredth to thousandth etc.
For e.g. 4 032.67 read as four thousand and thirty-two point
six seven, is equivalent to
(4 x 1000) + (0 x 100) + (3 x
10) + (2x1)+ (6 x 1/10) + (7 x 1/100).