As far as I can see, 5649808 is already in the base ten number system.
The answer should be a number (like 6) not words (like six).
five thousand, but you did white as a numeral
207
Numeral form would be a word, letter, symbol or figure expressing a number
The standard numeral form is 305,028,002
Eighty-three thousand and nine in numeral form is 83,009
The standard (numeral) form is 27,490,000,008
The numeral is 38,685,000 (US form).
129
sonbi
80,600,000
7,000,000,000