Ad monetization refers to the process of generating revenue from advertising. There are several formulas that can be used to monetize ads, including:

Cost per impression (CPM): This formula calculates the cost of an ad based on the number of times it is viewed. For example, if an ad costs $10 per 1,000 impressions, and it is viewed 1,500 times, the total cost would be $15.

Cost per click (CPC): This formula calculates the cost of an ad based on the number of clicks it receives. For example, if an ad costs $0.50 per click, and it receives 100 clicks, the total cost would be $50.

Cost per acquisition (CPA): This formula calculates the cost of an ad based on the number of conversions or sales it generates. For example, if an ad costs $100 per acquisition, and it generates 10 sales, the total cost would be $1,000.

Cost per lead (CPL): This formula calculates the cost of an ad based on the number of leads it generates. For example, if an ad costs $10 per lead, and it generates 100 leads, the total cost would be $1,000.

Revenue Sharing: This formula is based on the revenue generated by an ad, typically a percentage of the revenue generated by an ad will be paid to the publisher or the platform that is hosting the ad.

These are some of the most common formulas for ad monetization, but it's important to note that the ideal formula will vary depending on the type of ad, the target audience, and the goals of the campaign.