1. **State the problem:** Calculate the product of 2 and 2. 2. **Formula used:** Multiplication of two numbers is given by $a \times b$. 3. **Apply the formula:** Here, $a=2$ and $b=2$, so we calculate $2 \times 2$. 4. **Intermediate work:** $2 \times 2 = 4$. 5. **Conclusion:** The product of 2 and 2 is 4.