Multiply 189 by 4.

Brief Explanation:

Step-by-step Solution:

1. Step 1: Multiply the ones digit (9) by 4: $$9 \times 4 = 36$$. Write down 6 and carry over 3.
2. Step 2: Multiply the tens digit (8) by 4: $$8 \times 4 = 32$$. Add the carried-over 3: $$32 + 3 = 35$$. Write down 5 and carry over 3.
3. Step 3: Multiply the hundreds digit (1) by 4: $$1 \times 4 = 4$$. Add the carried-over 3: $$4 + 3 = 7$$. Write down 7.

Answer: 756