how d you turn the roman numeral number DCCXXXI into a regular number?
This site has a converter you can use.
http://www.novaroma.org/via_romana/numbers.html
If you want to know HOW to do it. D is 500, C is 100, X is 10 and I is 1. So it is 500 + 100 + 100 + 30 + 1.