The following advice is offered: Avoid unnecessarily large numbers or trailing zeroes – e.g. write 4 m rather than 4000 mm. For clothes sizes, prefer 95 cm to 950 mm. Use whole numbers and avoid decimal points if possible – e.g. write 25 mm rather than 2.5 cm.
Here are the basic guidelines for Chicago Style: Include your name, your instructor's name, the course, and the date in the upper left-hand corner of the first page. Double-space the text. 12 point font, Times New Roman is recommended. Page numbers in the header of the first page (not title page, first page of paper)
When writing measurements for an area, the standard convention is to use length by width. This means you'll typically state the longer dimension first, followed by the shorter one. For example, if a room measures 12 feet long and 10 feet wide, you would write it as 12' x 10'.
Chicago's general rule: “Chicago advises spelling out whole numbers from zero through one hundred and certain round multiples of those numbers.” Here's an example: Twelve houses sold in my neighborhood last year.
Chicago recommends using words, not numerals, for numbers lower than 100. For example, you would write “ninety-five,” not “95.” But numerals should still be used when you're referring to a specific measurement (e.g., “15 cm”) and when using decimals (e.g., “1.5”).
Overall page layout One inch margins on sides, top and bottom. Use Times or Times New Roman 12 pt font. Double-space the text of the paper. Use left-justified text, which will have a ragged right edge. Use a 1/2" indent for paragraph beginnings, block quotes and hanging (bibliography) indents.
In Chicago's default style for numbers, whole numbers under 101 are usually spelled out, as in three or ninety-three. Chicago's alternative rule spells out numbers up to and including nine.
Spell out numbers one through one hundred (Chicago's general rule). Spell out multiples of one through one hundred used in combination with hundred, thousand, or hundred thousand.
5000000 in Words can be written as Five Million. If you have saved 5000000 dollars, then you can write, “I have just saved Five Million dollars.” Five Million is the cardinal number word of 5000000 which denotes a quantity.