A decimal number is simply a way of representing a number in such a way that the place value of each digit is ten times that of the digit to its right. If it does not contain a fractional part then the decimal representation does not require a decimal point. So, for example 5 terawatts is 5 terawatts - no need for a decimal point.
1,000.
Billions are integers and so there will be no decimal points or digits after it.
There are none.
You multiply the numbers like you multiply integers. Count how many numbers are after the decimal points in both numbers combined and move the decimal point in front of the answer.
There should be no points after the decimal point.
One It's 3.14159 etc
The answer depends on the size of the font that you are using.
It is 1,000,000 megawatts
87.656 87.66
There is always one decimal point but decimal places can be more than one. 927.1 has one decimal place which is the tenths place.
Rounded to two decimal places, 7 centimetres is equal to 198.43 points.
A number cannot have two decimal points!