We're dividing 20307 by 86 
We want to figure out the number of times 20307 can be divided by 86.

Let's proceed to step 1:
The number 86 fits into 2 0 times, leaving a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Include the next digit (0) from the dividend after 2, then repeat: 20 / 86

Advancing to step 2:
The number 86 fits into 20 0 times, leaving a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 20 to get 20.
Take the next digit (3) from the dividend and append it to 20, then repeat: 203 / 86

Step 3:
The number 86 fits into 203 2 times, leaving a remainder of 31.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 172 from 203 leaves us with 31.
Grab the next digit (0) from the dividend, add it to 31, then carry on: 310 / 86

Moving on to step 4:
86 goes into 310 3 times with a remainder of 52.
The next digit of our result is 3. 
Result so far: 23.0
Deduct 258 from 310 and we're left with 52.
Bring next digit (7) of the dividend behind the 52 and repeat the process: 527 / 86

Moving on to step 5:
86 can be fit into 527 6 times, resulting in a remainder of 11.
Use 6 as the next digit of our solution. 
Result so far: 236.0
The remainder is 11 after subtracting 516 from 527.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 6:
86 goes into 110 1 times with a remainder of 24.
The number 1 becomes the next digit in our result. 
Result so far: 236.1
If we subtract 86 from 110, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 7:
240 divided by 86 is 2 with a remainder of 68.
Use 2 as the next digit of our solution. 
Result so far: 236.12
If we take 172 away from 240, we end up with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Advancing to step 8:
If we divide 680 by 86, we get 7 and a remainder of 78.
The next digit of our result is 7. 
Result so far: 236.127
Subtracting 602 from 680 leaves us with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Step 9:
780 divided by 86 is 9 with a remainder of 6.
Put 9 as the next digit of the answer. 
Result so far: 236.1279
Subtracting 774 from 780 leaves us 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.

On to step 10:
If we divide 60 by 86, we get 0 and a remainder of 60.
The next digit of our result is 0. 
Result so far: 236.1279
If we subtract 0 from 60, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 11:
600 divided by 86 is 6 with a remainder of 84.
Write down 6 as next digit of the result. 
Result so far: 236.127906
Subtracting 516 from 600 leaves us with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Going ahead to step 12:
86 goes into 840 9 times with a remainder of 66.
Put 9 as the next digit of the answer. 
Result so far: 236.1279069
If we take 774 away from 840, we end up with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Let's proceed to step 13:
660 divided by 86 is 7 with a remainder of 58.
Use 7 as the next digit of our solution. 
Result so far: 236.12790697
Subtract 602 from 660 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

In conclusion, the division gives 236.12790697 with a balance of 5.8e-08.