0.00088
101,000
You cannot write a decimal like that because 3 thousand isnt igger than 517 hundredth thousand
sixty five hundred thousandths. its just like counting normally to the left of the decimal (ten, hundred, thousand, ten thousand, hundred thousand, etc.) except you replace the end with "ths" (tenths, hundredths, thousandths, etc.).
$47,646. (BTW, if you say and, that usually means decimal. Say it like this: Forty-seven thousand, six hundred forty six dollars. )
117,000 = one hundred seventeen thousand. To help you learn how to write other numbers like this, just remember that if it's "thousand", that means there will be 3 digits to the right of the comma (unless there's a decimal, see below). If it's one hundred seventeen thousand, four hundred thirty five dollars and fifteen cents it's $117,435.15.