Multiply 304 by 3.

Brief Explanation:

Step-by-step Solution:

1. Step 1: Multiply the ones digit (4) by 3: $$4 \times 3 = 12$$. Write down 2 and carry over 1.
2. Step 2: Multiply the tens digit (0) by 3: $$0 \times 3 = 0$$. Add the carried-over 1: $$0 + 1 = 1$$. Write down 1.
3. Step 3: Multiply the hundreds digit (3) by 3: $$3 \times 3 = 9$$. Write down 9.

Answer: 912