1. The problem is to understand why the multiplication $4 \times 7$ is used instead of $7 \times 4$ in number 2. 2. Multiplication is commutative, which means $a \times b = b \times a$ for any numbers $a$ and $b$. 3. Therefore, $7 \times 4$ and $4 \times 7$ give the same result: $$7 \times 4 = 28 \quad \text{and} \quad 4 \times 7 = 28.$$ 4. The choice between $4 \times 7$ or $7 \times 4$ depends on the context or how the problem is framed, but mathematically they are equal. 5. So, using $4 \times 7$ instead of $7 \times 4$ is just a matter of convention or clarity in the problem, not a difference in the answer. 6. Final answer: Both $4 \times 7$ and $7 \times 4$ equal 28.