Okay. Multiplcation goes as follows.
Let's take the equasion 47x4 =
On one side, take the 47, let's put it on the left (It doesn't matter what side you use for multiplication). The four goes on the right, but not at the far edge. I was always taught to go the number of rows to the left that are in the equasion, so 4 7 times 4 (the times is part of the count) would be in what for addition would be the thousands column. So, on the far left is 47, and in the thousands column is the 4.
Now, You take 4 times 4, and that's sixteen, so to the right of the four (in the hundreds column, you put down the ten, and in the tens column you put the six).
Seven times four is twenty-eight, so in the tens column, where you put the six, add two more for twenty, and in the ones column add 8 for a total of 28.
Then clear the four out and you're done, leaving you with 188.
Division:
Let's use a different equasion because this one gets complicated if you don't have another abacus.
Let's use 320 divided by 5.
So 320 goes on the far right, and the five goes on the far left.
So, five goes into 3 0 times, so that doesn't work, so five goes into 32 six times because five times six is thirty.
Two colums to the left of the three, add six (I think of the spacing, like the first column is 0 and the second one is six, so again, the six is in the ten thousands column). Clear the three because five times six is thirty. So you're left with 20.
Five goes into twenty four times, so two to the left of the twenty, add four. Clear the two and you're done leaving you with a result of sixty-four.
I know this is kind of complicated, but hopefully it makes sense. I use a mental abacus for this kind of thing all the time.
thanks,
Michael