10 in Roman numerals is X.
$10,000,000.00
7.50 is in numeric form. To write it as a mixed number, you could write 7 5/10 or 7 1/2 in simplest form.
It's already a numeric number
4020096 IS in numeric form.
8 in numeric numbers is VIII.
LXXV
Nineteen.
XCIV
(VIII)
MMMMMMMMMMMMMD
8,400
(XXII)