you take or give groups of the number that is being multiplied/divided to.
Multiplying and Dividing is quite simple but practice is what makes it so easy. You can't really teach someone multiplications, it's more memorization. For example 12x12 should just pop up in your head 144. But for bigger multiplication questions like 25x10 here is how you would do it. When you set up the equations it's always Top to bottom, so 25 should be on the top and 10 should be on the bottom. After you set it up, you use simple math, for this example you would think, "How much does 5 go into 0," and "how much 2 goes into 0". After you figure this out, you would place it in the answer colum, so for this, the answer colum would be 0 and 0. After that you would have to see how much 1 goes into 5 and 2. Except this time there would be a zero in the back of your answer, so for this example the zero would go behind your answer of 25. So the final answer should be 250. Dividing is different though and in my opinion much harder, same concept.