We're dividing 20579100 by 12 
Let's see how many times 12 fits into 20579100.

Step 1:
12 goes into 2 0 times with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 12

Going ahead to step 2:
12 can be fit into 20 1 times, resulting in a remainder of 8.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 12 from 20, we get 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 12

On to step 3:
When dividing 85 by 12, we get 7 with a remainder of 1.
Write down 7 as next digit of the result. 
Result so far: 17.0
If we subtract 84 from 85, we get 1.
Grab the next digit (7) from the dividend, add it to 1, then carry on: 17 / 12

Going ahead to step 4:
The number 12 fits into 17 1 times, leaving a remainder of 5.
The next digit of our result is 1. 
Result so far: 171.0
The remainder is 5 after subtracting 12 from 17.
Append the next digit (9) from the dividend to 5 and continue with: 59 / 12

On to step 5:
59 divided by 12 is 4 with a remainder of 11.
Record the quotient 4 as the next digit in the result. 
Result so far: 1714.0
The remainder is 11 after subtracting 48 from 59.
Grab the next digit (1) from the dividend, add it to 11, then carry on: 111 / 12

On to step 6:
12 goes into 111 9 times with a remainder of 3.
Record the quotient 9 as the next digit in the result. 
Result so far: 17149.0
If we subtract 108 from 111, we get 3.
Grab the next digit (0) from the dividend, add it to 3, then carry on: 30 / 12

On to step 7:
12 can be fit into 30 2 times, resulting in a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 171492.0
The remainder is 6 after subtracting 24 from 30.
Take the next digit (0) from the dividend and append it to 6, then repeat: 60 / 12

Moving on to step 8:
If we divide 60 by 12, we get 5 and a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 1714925.0
If we take 60 away from 60, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 9:
12 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 1714925.0
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 10:
If we divide 0 by 12, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 1714925.0
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 1714925.0 with a remaining 0.0.