How is the number of words calculated ?
For documents on WORD, for example, the number of words is calculated directly by the software. With Word Office 2007, the number of pages and words is automatically displayed in the Word Count tool at the bottom of the page.
If you are using Word Office 97-2003, just click on Files>properties and Word will display general information about the file, including the number of characters and words.
For a paper document, the number of words is counted manually. We count the number of words per line, taking 3 different lines as a reference, and we multiply it by the number of lines in the page.