31259 divided by 12 
We're looking to find how many times 12 goes into 31259.

Advancing to step 1:
12 goes into 3 0 times with 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.
Take the next digit (1) from the dividend and append it to 3, then repeat: 31 / 12

Moving on to step 2:
If we divide 31 by 12, we get 2 and a remainder of 7.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we subtract 24 from 31, we get 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 12

On to step 3:
12 goes into 72 6 times with a remainder of 0.
Record the quotient 6 as the next digit in the result. 
Result so far: 26.0
The remainder is 0 after subtracting 72 from 72.
Append the next digit (5) from the dividend to 0 and continue with: 5 / 12

Step 4:
If we divide 5 by 12, we get 0 and a remainder of 5.
The next digit of our result is 0. 
Result so far: 260.0
The remainder is 5 after subtracting 0 from 5.
Take the next digit (9) from the dividend and append it to 5, then repeat: 59 / 12

Going ahead to step 5:
When dividing 59 by 12, we get 4 with a remainder of 11.
Write down 4 as next digit of the result. 
Result so far: 2604.0
The remainder is 11 after subtracting 48 from 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 6:
When dividing 110 by 12, we get 9 with a remainder of 2.
Use 9 as the next digit of our solution. 
Result so far: 2604.9
Subtracting 108 from 110 leaves us 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.

Let's proceed to step 7:
12 can be fit into 20 1 times, resulting in a remainder of 8.
Write down 1 as next digit of the result. 
Result so far: 2604.91
If we take 12 away from 20, 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.

Going ahead to step 8:
80 divided by 12 is 6 with a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 2604.916
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.

Let's proceed to step 9:
If we divide 80 by 12, we get 6 and a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 2604.9166
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.

The final outcome is 2604.9166, with a leftover of 8e-05.