1. **State the problem:** You have 12.30 and want to buy comic books costing 2.50 each. How many comic books can you buy? 2. **Formula:** To find the number of comic books, divide the total money by the cost per comic book: $$\text{Number of comic books} = \frac{\text{Total money}}{\text{Cost per comic book}}$$ 3. **Substitute values:** $$\frac{12.30}{2.50}$$ 4. **Perform division:** $$\frac{12.30}{2.50} = 4.92$$ 5. **Interpretation:** Since you cannot buy a fraction of a comic book, you can buy only the whole number part, which is 4 comic books. **Final answer:** You can buy 4 comic books.