Question: User: 3\times 5
1. The problem is to calculate the product of $3$ and $5$.
2. The formula for multiplication is:
$$a \times b = c$$
where $a$ and $b$ are the numbers to multiply, and $c$ is the product.
3. Substitute the values:
$$3 \times 5 = c$$
4. Multiply $3$ by $5$:
$$3 \times 5 = 15$$
5. Therefore, the product of $3$ and $5$ is $15$.