We look at the division of 315970 by 12 
Our goal is to divide 315970 by 12.

Going ahead to step 1:
12 can be fit into 3 0 times, resulting in a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Fetch the next digit (1) from the dividend, attach it to 3 and continue: 31 / 12

Moving on to step 2:
12 can be fit into 31 2 times, resulting in a remainder of 7.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Deduct 24 from 31 and we're left with 7.
Grab the next digit (5) from the dividend, add it to 7, then carry on: 75 / 12

On to step 3:
When dividing 75 by 12, we get 6 with a remainder of 3.
The number 6 becomes the next digit in our result. 
Result so far: 26.0
If we subtract 72 from 75, we get 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 12

Advancing to step 4:
12 goes into 39 3 times with a remainder of 3.
Use 3 as the next digit of our solution. 
Result so far: 263.0
If we take 36 away from 39, we end up with 3.
Take the next digit (7) from the dividend and append it to 3, then repeat: 37 / 12

Advancing to step 5:
If we divide 37 by 12, we get 3 and a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 2633.0
If we take 36 away from 37, we end up with 1.
Grab the next digit (0) from the dividend, add it to 1, then carry on: 10 / 12

Moving on to step 6:
12 can be fit into 10 0 times, resulting in a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 26330.0
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 7:
The number 12 fits into 100 8 times, leaving a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 26330.8
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 8:
12 goes into 40 3 times with a remainder of 4.
Put 3 as the next digit of the answer. 
Result so far: 26330.83
Subtracting 36 from 40 leaves us 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.

Let's proceed to step 9:
The number 12 fits into 40 3 times, leaving a remainder of 4.
Use 3 as the next digit of our solution. 
Result so far: 26330.833
Deduct 36 from 40 and we're left 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.

Our division results in 26330.833 with a remaining 0.0004.