This question can't really be answered as asked. Different industries yield different CPC/CPM rates. Additionally, how your users interact with the ads would

This question can't really be answered as asked. Different industries yield different CPC/CPM rates. Additionally, how your users interact with the ads would also effect your revenue. If you can monetize your user base through other means, such as creating a paid Pro version of your service, or a SaaS app marketed to your users, you have the opportunity to make more money than just advertising.