Write the numbers one above the other, aligned by place value
Multiply the bottom number’s ones digit by each digit of the top number from right to left
Write the result below, carrying when needed
Multiply the bottom number’s tens digit by each digit of the top number from right to left
Write this second result one place to the left, carrying when needed
Multiply the bottom number’s hundreds digit by each digit of the top number from right to left
Write this third result two places to the left, carrying when needed
Add all partial products
Check the final sum for the answer