What is 20/220000?
The answer to the question "What is 20/220000?" is a simple division problem. 20 divided by 220000 equals 0.00009090909... This can be expressed as a fraction (20/220000) which can be simplified to 1/11000. It's a very small number, representing a tiny fraction of the whole.
Depending on the context, you might round this to a more manageable number of significant figures. For example, you might round it to 0.000091 or even 9.1 x 10-5. The best way to round depends on the level of precision needed for the specific application.