What happens next in this paragraph?

How to master multiplication without learning the tables
Learn how to multiply by 10's.
The last easy step is to teach them how to multiply by one. The answer is just the original number.

[a]. To do this, divide the answer by 10 to get the first number multiplied by the second, then multiply by 10 to get the multiplication number multiplied by 10. Of course the answer is the original number.
[b]. For instance, multiply 2 x 2 x 7 = 10 4 = 10 (4 x 8 = 5). In this case, together, the numbers are a ratio.
[c]. Learn how to multiply by 0. This is also an easy step because anything times zero is zero.
[d]. This will give them a sense of the number themselves, though they will learn how to multiply by 4. You must show them the value of each digit of the number and give them a percentage to compare to.
[c].