google-ads-math

Use for ANY PPC calculation, advertising math, budget projection, forecasting, or when numbers related to advertising are mentioned. Trigger for: CPA, ROAS, CTR, CPC, CVR, CPM, impression share, budget projection, break-even analysis, cost per lead, cost per acquisition, return on ad spend, click-through rate, conversion rate, cost per mille, or ANY arithmetic involving ad spend, clicks, impressions, or conversions. No API credentials needed — pure math.