You can never use more than one decimal point.
It depends on the level of accuracy of the basic information that you are working with.
If I understand this right, you want to know how to convert a fraction into a decimal with the aid of a calculator. This is usually done by pressing the fraction button on your calculator which changes it from a fraction to a decimal and vice versa.
2.2
the answer is 2.73
215,000,000 rounded to 2 decimal points is 215,000,000.00
2/4 is equal to 1/2 I think you can put 1/2 into any calculator and it will automatically change it into a decimal
21.848 to 2 decimal points is 21.85 as you round up the final decimal
as a fraction, it is already in simplest form. if you want a decimal, you can use a calculator and round it because it is a big number :P
3 points according to my calculator. This is on the points plus system.
8.59
It is then 62.19
2.364, rounded to two decimal places, is 2.36.