thats assuming cats are worth .001btc each, of 1btc = 1k cat
edit: woops double math
so in other words you pulled it out your ass
His numbers are based on previous asking price for CAT.
Not only the asking price, but the trade price as well. I've seen cat sell pretty well for 0.0009 to 0.0012. Obviously much rarer on the latter side. The nice thing about the catcoin community holders is that they have declined for lowering prices and it has helped immensely imo.