Spell out numbers less than 10 and numbers that begin sentences.
Forty thousand developers. Two Droplets.
Use numerals if a number is paired with a unit of bits/bytes, for currency, and in ranges.
4 TB of block storage. $5 per month. 2-10 files.
Use numerals for ordinals greater than 10 and ordinals that represent times of the month. Spell out all other ordinals.
2nd week in February. 11th in succession. Second in line. Third place.
Use a space to separate numbers and units.
The file size limit is 500 MB.
Don’t add -ly to ordinal numbers.