how do i get the equivalent value of decimal values in hexadecimal

Question

the decimal numbers 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17 are having the hexadecimal equivalent of 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F, 10, 11 respectively. how do i get the remaining till 225 in hexadecimal

Answer 1

225 hex=5+2*16+2*16^2

=5+32+512

=549