Update AdMob CPM Earnings Logic

The backend that runs on my DigitalOcean droplet already pulls AdMob ads and shows them correctly, but the logic that turns each impression into CPM revenue is outdated.
What I need is a clean rewrite of that “earning method” so the server records earnings per-thousand-impressions accurately and passes the new totals to the frontend in real time. The AdMob SDK is fully integrated; no extra ad networks are involved right now.

Once the backend endpoint is fixed, the corresponding widgets in the Vue-based (React / Angular also welcome) dashboard must display the refreshed figures without breaking the existing charts and tables.

Deliverable:
• Updated backend function or endpoint that calculates CPM using the latest AdMob response data and stores it in the database.
• Frontend tweak so the earnings panel shows the new numbers immediately after each sync.
• Short README or inline comments explaining the change so future updates on DigitalOcean are painless.

If you have solid experience with AdMob, server-side CPM accounting, and can deploy to a live Ubuntu droplet without downtime, let’s get this shipped quickly.