426979 ÷ 12 
Our goal is to divide 426979 by 12.

Advancing to step 1:
If we divide 4 by 12, we get 0 and a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 12

Let's proceed to step 2:
When dividing 42 by 12, we get 3 with a remainder of 6.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we subtract 36 from 42, we get 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 12

Step 3:
12 can be fit into 66 5 times, resulting in a remainder of 6.
Put 5 as the next digit of the answer. 
Result so far: 35.0
If we subtract 60 from 66, we get 6.
Take the next digit (9) from the dividend and append it to 6, then repeat: 69 / 12

Step 4:
12 goes into 69 5 times with a remainder of 9.
Write down 5 as next digit of the result. 
Result so far: 355.0
If we subtract 60 from 69, we get 9.
Bring next digit (7) of the dividend behind the 9 and repeat the process: 97 / 12

Going ahead to step 5:
If we divide 97 by 12, we get 8 and a remainder of 1.
Write down 8 as next digit of the result. 
Result so far: 3558.0
Subtracting 96 from 97 leaves us with 1.
Append the next digit (9) from the dividend to 1 and continue with: 19 / 12

Advancing to step 6:
12 can be fit into 19 1 times, resulting in a remainder of 7.
Put 1 as the next digit of the answer. 
Result so far: 35581.0
If we take 12 away from 19, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 7:
When dividing 70 by 12, we get 5 with a remainder of 10.
The next digit of our result is 5. 
Result so far: 35581.5
If we subtract 60 from 70, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 8:
If we divide 100 by 12, we get 8 and a remainder of 4.
Put 8 as the next digit of the answer. 
Result so far: 35581.58
The remainder is 4 after subtracting 96 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 9:
12 can be fit into 40 3 times, resulting in a remainder of 4.
The next digit of our result is 3. 
Result so far: 35581.583
If we take 36 away from 40, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 10:
When dividing 40 by 12, we get 3 with a remainder of 4.
Put 3 as the next digit of the answer. 
Result so far: 35581.5833
The remainder is 4 after subtracting 36 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final outcome is 35581.5833, with a leftover of 4e-05.