Five hundred nine thousand, one.
509 000 Five and nine hundred thousand
five hundred and nine thousand, nine hundred and sixty-six 509,966
$509.00
$509,000,000.00
DIX
509 over 7 as a mixed number = 725/7
509/100
It is: 509 and 7/10
9.05
509.7 = 509 7/10
7.509 814 362 * 106