If you haven't already, learn to set up designated funds here.
Edit your Donation Field.
Use [regular brackets] to place the number next to each fund.
Save and publish. The brackets will hide the numbers on the live page...
... but will display in the reporting and exports.
FAQs
Is there a way to designate one accounting number instead of multiple funds?
Yes, you can set a page-wide accounting reference under Basic Setup in your page builder.