D5

DIV

D + IV (roman numeral 4)

D + IIII

http://mathtourist.blogspot.com/2010/08/iiii-versus-iv-on-clocks.html

You can also count up how many of each character you need to create all the numbers. In the IIII case, the totals are 20 I's, 4 V's, and 4 X's (all even numbers), versus 17 I's, 5 V's, and 4 X's.

>>4178637

>

Brain Frt - too early in the a.m.