We're dividing 23986 by 31 
We want to figure out the number of times 23986 can be divided by 31.

On to step 1:
2 divided by 31 is 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Include the next digit (3) from the dividend after 2, then repeat: 23 / 31

Moving on to step 2:
23 divided by 31 is 0 with a remainder of 23.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 23, we end up with 23.
Take the next digit (9) from the dividend and append it to 23, then repeat: 239 / 31

Advancing to step 3:
If we divide 239 by 31, we get 7 and a remainder of 22.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
If we subtract 217 from 239, we get 22.
Grab the next digit (8) from the dividend, add it to 22, then carry on: 228 / 31

Advancing to step 4:
31 goes into 228 7 times with a remainder of 11.
Record the quotient 7 as the next digit in the result. 
Result so far: 77.0
If we take 217 away from 228, we end up with 11.
Fetch the next digit (6) from the dividend, attach it to 11 and continue: 116 / 31

Step 5:
When dividing 116 by 31, we get 3 with a remainder of 23.
Put 3 as the next digit of the answer. 
Result so far: 773.0
Subtracting 93 from 116 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

On to step 6:
If we divide 230 by 31, we get 7 and a remainder of 13.
Put 7 as the next digit of the answer. 
Result so far: 773.7
Subtracting 217 from 230 leaves us with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 7:
31 can be fit into 130 4 times, resulting in a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 773.74
The remainder is 6 after subtracting 124 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 8:
The number 31 fits into 60 1 times, leaving a remainder of 29.
Use 1 as the next digit of our solution. 
Result so far: 773.741
Deduct 31 from 60 and we're left with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

On to step 9:
When dividing 290 by 31, we get 9 with a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 773.7419
Subtract 279 from 290 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 10:
31 can be fit into 110 3 times, resulting in a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 773.74193
Subtracting 93 from 110 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 11:
When dividing 170 by 31, we get 5 with a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 773.741935
If we take 155 away from 170, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 12:
The number 31 fits into 150 4 times, leaving a remainder of 26.
The next digit of our result is 4. 
Result so far: 773.7419354
If we subtract 124 from 150, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Let's proceed to step 13:
If we divide 260 by 31, we get 8 and a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 773.74193548
Subtracting 248 from 260 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Our division results in 773.74193548 with a remaining 1.2e-08.