1. **State the problem:** Calculate the product of the numbers 3.14, 4, and 5. 2. **Formula used:** To multiply numbers, use the multiplication operation: $$a \times b \times c$$ 3. **Apply the numbers:** $$3.14 \times 4 \times 5$$ 4. **Step-by-step calculation:** - First multiply 3.14 and 4: $$3.14 \times 4 = 12.56$$ - Then multiply the result by 5: $$12.56 \times 5 = 62.8$$ 5. **Final answer:** The product of 3.14, 4, and 5 is $$62.8$$.