How to Change Text Field in Checkboxes to Numbers

How to Change Text Field in Checkboxes to Numbers

Hello...I am new to Zoho and I like what I see so far. Unfortunately, I've been struggling with something that should be pretty basic, and searching through the forums and emailing support has only helped me realize that the only way to accomplish my task is to write a formula. 

Here is what I need to accomplish. I have a registration form with checkboxes for fees:

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Instead of having the View show the text such as "Member Educator/Student/Retired $75", I would like the View to show 75. People should be able to select "Guest $100" and have the View show 100. Ideally, if someone selected any of the values plus a guest, it would add those amounts. 
Is there a simple way to do this? I can put up with it not adding if I could just get the view to show numbers instead of text. I look forward to any help you can provide.
Thank you!