We look at the division of 86640 by 35 
We're looking to find how many times 35 goes into 86640.

Advancing to step 1:
The number 35 fits into 8 0 times, leaving a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 35

Going ahead to step 2:
If we divide 86 by 35, we get 2 and a remainder of 16.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 70 from 86, we get 16.
Bring next digit (6) of the dividend behind the 16 and repeat the process: 166 / 35

Let's proceed to step 3:
35 can be fit into 166 4 times, resulting in a remainder of 26.
Write down 4 as next digit of the result. 
Result so far: 24.0
If we subtract 140 from 166, we get 26.
Take the next digit (4) from the dividend and append it to 26, then repeat: 264 / 35

Step 4:
264 divided by 35 is 7 with a remainder of 19.
Put 7 as the next digit of the answer. 
Result so far: 247.0
Subtracting 245 from 264 leaves us with 19.
Bring next digit (0) of the dividend behind the 19 and repeat the process: 190 / 35

Moving on to step 5:
35 goes into 190 5 times with a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 2475.0
If we subtract 175 from 190, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 6:
150 divided by 35 is 4 with a remainder of 10.
Write down 4 as next digit of the result. 
Result so far: 2475.4
Subtracting 140 from 150 leaves us 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 7:
The number 35 fits into 100 2 times, leaving a remainder of 30.
Use 2 as the next digit of our solution. 
Result so far: 2475.42
Subtracting 70 from 100 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 8:
When dividing 300 by 35, we get 8 with a remainder of 20.
Record the quotient 8 as the next digit in the result. 
Result so far: 2475.428
The remainder is 20 after subtracting 280 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 9:
35 can be fit into 200 5 times, resulting in a remainder of 25.
The next digit of our result is 5. 
Result so far: 2475.4285
If we take 175 away from 200, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Advancing to step 10:
When dividing 250 by 35, we get 7 with a remainder of 5.
Record the quotient 7 as the next digit in the result. 
Result so far: 2475.42857
If we subtract 245 from 250, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 11:
35 goes into 50 1 times with a remainder of 15.
Put 1 as the next digit of the answer. 
Result so far: 2475.428571
The remainder is 15 after subtracting 35 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 12:
If we divide 150 by 35, we get 4 and a remainder of 10.
The next digit of our result is 4. 
Result so far: 2475.4285714
Deduct 140 from 150 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.

Advancing to step 13:
35 can be fit into 100 2 times, resulting in a remainder of 30.
The number 2 becomes the next digit in our result. 
Result so far: 2475.42857142
The remainder is 30 after subtracting 70 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

The final result is 2475.42857142 with a remainder of 3e-08.