The formula to calculate the Marketing Impact (MI) is:
\[ MI = \frac{M \cdot E \cdot R}{C} \]
Where:
Let's say the total marketing spend (M) is $10,000, the effectiveness of the marketing campaign (E) is 0.8, the reach of the marketing campaign (R) is 50,000 people, and the cost per customer acquisition (C) is $20. Using the formula:
\[ MI = \frac{10,000 \cdot 0.8 \cdot 50,000}{20} = 20,000,000 \]
So, the marketing impact is 20,000,000.