What is my Website Return on Investment?

CorpoCuisine allows you to figure your return on web investment (R O W I)

Our formula combines: Earnings, Savings, the Cost of web development and associated expenses
Enter a year worth of each: Earnings and Savings (or at least two quarters)
Enter a year worth of web development cost (or at least two quarters based upon amortization schedule)
And one year worth of associated cost (or at least two quarters)
For example: Updates, cost of hosting, maintenance etc...)

Please, No comma " , " dot " . " or Ending by " .00 "

Enter your Web related earnings
  
Enter your Web related savings: Clerical, mailing...
  
Enter your Web development cost
  
Enter your Web associated expenses