1. The problem is to multiply 9 by 57. 2. The formula for multiplication is $a \times b = c$, where $a$ and $b$ are numbers and $c$ is their product. 3. Multiply 9 by 57: $$9 \times 57$$ 4. Calculate the product: $$9 \times 57 = 513$$ 5. Therefore, the answer is 513.