I assume you mean US dollars. The simple answer is that a kid doesn't usually get that much money. It takes years of work to save that much money.
You can write eighty-six thousand dollars as "$86,000" in numerical form, or as "eighty-six thousand dollars" in words.
1642.00
On the line to the left of the word 'dollars': Six thousand and 00/100In the small block next to the dollar sign: 6,000.00
One thousand six hundred and 00/100 dollars
One thousand six hundredFor US dollars: One thousand six hundred dollarsFor check-writing: One thousand six hundred and 00/100 dollars
3000 dollars
Sixty-six thousand dollars: $66,000.00
$6,000.00
60
Six hundred thousand dollars.
Six thousand nine hundred dollarsWhen writing a check: Six thousand nine hundred and 00/100 dollars
Two thousand six dollars and fifty-one cents in numbers is $206.51