Can someone write this out for me?

[Lestat]

You're both incredibly smarter than I am at math. The only way I could solve the problem was by cheating. In a short time (longer than should've been necessary), I figured out, "Hey! C has to be in increments of 100!, duh!". I then simply tried C=100, c=200, and so on until I arrived at the correct answer.

I then gave this problem to a grade school TEACHER who couldn't figure it out right away! I also asked this girl I knew who was pretty good in math and she didn't know how to write this problem out. I figured the 2+2 guys would instantly. I was right. A very smart group on here.