Let's divide 212590 by 9
We want to figure out the number of times 212590 can be divided by 9.

Let's proceed to step 1:
The number 9 fits into 2 0 times, leaving a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 9

On to step 2:
If we divide 21 by 9, we get 2 and a remainder of 3.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we take 18 away from 21, we end up with 3.
Include the next digit (2) from the dividend after 3, then repeat: 32 / 9

Going ahead to step 3:
If we divide 32 by 9, we get 3 and a remainder of 5.
The number 3 becomes the next digit in our result. 
Result so far: 23.0
Subtracting 27 from 32 leaves us with 5.
Take the next digit (5) from the dividend and append it to 5, then repeat: 55 / 9

Going ahead to step 4:
9 can be fit into 55 6 times, resulting in a remainder of 1.
Put 6 as the next digit of the answer. 
Result so far: 236.0
If we take 54 away from 55, we end up with 1.
Take the next digit (9) from the dividend and append it to 1, then repeat: 19 / 9

On to step 5:
If we divide 19 by 9, we get 2 and a remainder of 1.
Put 2 as the next digit of the answer. 
Result so far: 2362.0
If we take 18 away from 19, we end up with 1.
Append the next digit (0) from the dividend to 1 and continue with: 10 / 9

Moving on to step 6:
10 divided by 9 is 1 with a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 23621.0
Deduct 9 from 10 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 7:
The number 9 fits into 10 1 times, leaving a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 23621.1
If we take 9 away from 10, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 8:
9 goes into 10 1 times with a remainder of 1.
The next digit of our result is 1. 
Result so far: 23621.11
Deduct 9 from 10 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The final result is 23621.11 with a remainder of 0.001.