398981 divided by 12 
Let's see how many times 12 fits into 398981.

Going ahead to step 1:
When dividing 3 by 12, we get 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 12

On to step 2:
12 goes into 39 3 times with a remainder of 3.
Write down 3 as next digit of the result. 
Result so far: 3.0
The remainder is 3 after subtracting 36 from 39.
Bring next digit (8) of the dividend behind the 3 and repeat the process: 38 / 12

Going ahead to step 3:
12 can be fit into 38 3 times, resulting in a remainder of 2.
Put 3 as the next digit of the answer. 
Result so far: 33.0
If we take 36 away from 38, we end up with 2.
Include the next digit (9) from the dividend after 2, then repeat: 29 / 12

Let's proceed to step 4:
12 can be fit into 29 2 times, resulting in a remainder of 5.
Use 2 as the next digit of our solution. 
Result so far: 332.0
The remainder is 5 after subtracting 24 from 29.
Include the next digit (8) from the dividend after 5, then repeat: 58 / 12

Advancing to step 5:
12 goes into 58 4 times with a remainder of 10.
Use 4 as the next digit of our solution. 
Result so far: 3324.0
Subtracting 48 from 58 leaves us with 10.
Take the next digit (1) from the dividend and append it to 10, then repeat: 101 / 12

Moving on to step 6:
When dividing 101 by 12, we get 8 with a remainder of 5.
Put 8 as the next digit of the answer. 
Result so far: 33248.0
If we subtract 96 from 101, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 7:
If we divide 50 by 12, we get 4 and a remainder of 2.
The next digit of our result is 4. 
Result so far: 33248.4
If we take 48 away from 50, we end up 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 8:
20 divided by 12 is 1 with a remainder of 8.
Record the quotient 1 as the next digit in the result. 
Result so far: 33248.41
The remainder is 8 after subtracting 12 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 9:
80 divided by 12 is 6 with a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 33248.416
Subtracting 72 from 80 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 10:
80 divided by 12 is 6 with a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 33248.4166
If we take 72 away from 80, we end up with 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 outcome is 33248.4166, with a leftover of 8e-05.