We look at the division of 379983 by 12 
We want to divide 379983 by 12.

Advancing to step 1:
If we divide 3 by 12, we get 0 and a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Bring next digit (7) of the dividend behind the 3 and repeat the process: 37 / 12

Let's proceed to step 2:
37 divided by 12 is 3 with a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtract 36 from 37 to get 1.
Grab the next digit (9) from the dividend, add it to 1, then carry on: 19 / 12

Moving on to step 3:
If we divide 19 by 12, we get 1 and a remainder of 7.
The next digit of our result is 1. 
Result so far: 31.0
If we take 12 away from 19, we end up with 7.
Append the next digit (9) from the dividend to 7 and continue with: 79 / 12

Step 4:
If we divide 79 by 12, we get 6 and a remainder of 7.
The number 6 becomes the next digit in our result. 
Result so far: 316.0
If we subtract 72 from 79, we get 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 12

Step 5:
If we divide 78 by 12, we get 6 and a remainder of 6.
The next digit of our result is 6. 
Result so far: 3166.0
If we subtract 72 from 78, we get 6.
Append the next digit (3) from the dividend to 6 and continue with: 63 / 12

Advancing to step 6:
12 goes into 63 5 times with a remainder of 3.
Put 5 as the next digit of the answer. 
Result so far: 31665.0
Subtract 60 from 63 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 7:
When dividing 30 by 12, we get 2 with a remainder of 6.
Record the quotient 2 as the next digit in the result. 
Result so far: 31665.2
If we take 24 away from 30, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 8:
12 can be fit into 60 5 times, resulting in a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 31665.25
The remainder is 0 after subtracting 60 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
0 divided by 12 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 31665.25
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 10:
If we divide 0 by 12, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 31665.25
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 31665.25, with a leftover of 0.0.