21759386 ÷ 12 
Our goal is to divide 21759386 by 12.

Advancing to step 1:
When dividing 2 by 12, we get 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 12

Let's proceed to step 2:
If we divide 21 by 12, we get 1 and a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 12 from 21, we get 9.
Fetch the next digit (7) from the dividend, attach it to 9 and continue: 97 / 12

Moving on to step 3:
The number 12 fits into 97 8 times, leaving a remainder of 1.
Write down 8 as next digit of the result. 
Result so far: 18.0
The remainder is 1 after subtracting 96 from 97.
Grab the next digit (5) from the dividend, add it to 1, then carry on: 15 / 12

On to step 4:
If we divide 15 by 12, we get 1 and a remainder of 3.
Use 1 as the next digit of our solution. 
Result so far: 181.0
The remainder is 3 after subtracting 12 from 15.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 12

Let's proceed to step 5:
12 goes into 39 3 times with a remainder of 3.
Write down 3 as next digit of the result. 
Result so far: 1813.0
Subtract 36 from 39 to get 3.
Take the next digit (3) from the dividend and append it to 3, then repeat: 33 / 12

On to step 6:
12 can be fit into 33 2 times, resulting in a remainder of 9.
Write down 2 as next digit of the result. 
Result so far: 18132.0
Subtracting 24 from 33 leaves us with 9.
Grab the next digit (8) from the dividend, add it to 9, then carry on: 98 / 12

Let's proceed to step 7:
The number 12 fits into 98 8 times, leaving a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 181328.0
If we subtract 96 from 98, we get 2.
Append the next digit (6) from the dividend to 2 and continue with: 26 / 12

Advancing to step 8:
26 divided by 12 is 2 with a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 1813282.0
Deduct 24 from 26 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 9:
The number 12 fits into 20 1 times, leaving a remainder of 8.
Record the quotient 1 as the next digit in the result. 
Result so far: 1813282.1
Subtract 12 from 20 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 10:
If we divide 80 by 12, we get 6 and a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 1813282.16
If we subtract 72 from 80, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 11:
12 goes into 80 6 times with a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 1813282.166
If we subtract 72 from 80, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final result is 1813282.166 with a remainder of 0.0008.