A decimal looks like this 0.16 however it can be any number at the end.
.
a Decimal.
It is already a decimal in the form of 78.5
There are decimal points in decimal numbers. They look just like periods.
1.5% = 0.015 in decimal
Yes, it does.
0.000000001
2 or 2.0
It is 0.000033... (repeating).
It is 0.0666... (repeating).
2.5
0.005