We're dividing 102539 by 85 
Our goal is to divide 102539 by 85.

Step 1:
85 can be fit into 1 0 times, resulting in a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Take the next digit (0) from the dividend and append it to 1, then repeat: 10 / 85

Advancing to step 2:
85 goes into 10 0 times with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 10 after subtracting 0 from 10.
Take the next digit (2) from the dividend and append it to 10, then repeat: 102 / 85

Let's proceed to step 3:
102 divided by 85 is 1 with a remainder of 17.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 17 after subtracting 85 from 102.
Take the next digit (5) from the dividend and append it to 17, then repeat: 175 / 85

Moving on to step 4:
85 goes into 175 2 times with a remainder of 5.
Write down 2 as next digit of the result. 
Result so far: 12.0
Subtracting 170 from 175 leaves us with 5.
Append the next digit (3) from the dividend to 5 and continue with: 53 / 85

Step 5:
When dividing 53 by 85, we get 0 with a remainder of 53.
The number 0 becomes the next digit in our result. 
Result so far: 120.0
Subtracting 0 from 53 leaves us with 53.
Fetch the next digit (9) from the dividend, attach it to 53 and continue: 539 / 85

Advancing to step 6:
If we divide 539 by 85, we get 6 and a remainder of 29.
The next digit of our result is 6. 
Result so far: 1206.0
Subtract 510 from 539 to get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Going ahead to step 7:
When dividing 290 by 85, we get 3 with a remainder of 35.
Record the quotient 3 as the next digit in the result. 
Result so far: 1206.3
Subtracting 255 from 290 leaves us with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 8:
85 goes into 350 4 times with a remainder of 10.
Use 4 as the next digit of our solution. 
Result so far: 1206.34
Deduct 340 from 350 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 9:
If we divide 100 by 85, we get 1 and a remainder of 15.
Put 1 as the next digit of the answer. 
Result so far: 1206.341
The remainder is 15 after subtracting 85 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 10:
When dividing 150 by 85, we get 1 with a remainder of 65.
Record the quotient 1 as the next digit in the result. 
Result so far: 1206.3411
Subtracting 85 from 150 leaves us with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

The final result is 1206.3411 with a remainder of 0.00065.