We're dividing 86309358 by 680 
We want to divide 86309358 by 680.

Step 1:
The number 680 fits into 8 0 times, leaving a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 680

Going ahead to step 2:
If we divide 86 by 680, we get 0 and a remainder of 86.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 86, we end up with 86.
Take the next digit (3) from the dividend and append it to 86, then repeat: 863 / 680

Step 3:
863 divided by 680 is 1 with a remainder of 183.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 183 after subtracting 680 from 863.
Take the next digit (0) from the dividend and append it to 183, then repeat: 1830 / 680

On to step 4:
The number 680 fits into 1830 2 times, leaving a remainder of 470.
The next digit of our result is 2. 
Result so far: 12.0
If we subtract 1360 from 1830, we get 470.
Fetch the next digit (9) from the dividend, attach it to 470 and continue: 4709 / 680

Advancing to step 5:
When dividing 4709 by 680, we get 6 with a remainder of 629.
The number 6 becomes the next digit in our result. 
Result so far: 126.0
Deduct 4080 from 4709 and we're left with 629.
Include the next digit (3) from the dividend after 629, then repeat: 6293 / 680

Step 6:
6293 divided by 680 is 9 with a remainder of 173.
Write down 9 as next digit of the result. 
Result so far: 1269.0
Subtracting 6120 from 6293 leaves us with 173.
Include the next digit (5) from the dividend after 173, then repeat: 1735 / 680

Moving on to step 7:
If we divide 1735 by 680, we get 2 and a remainder of 375.
Put 2 as the next digit of the answer. 
Result so far: 12692.0
If we take 1360 away from 1735, we end up with 375.
Grab the next digit (8) from the dividend, add it to 375, then carry on: 3758 / 680

Going ahead to step 8:
The number 680 fits into 3758 5 times, leaving a remainder of 358.
The number 5 becomes the next digit in our result. 
Result so far: 126925.0
If we take 3400 away from 3758, we end up with 358.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3580, and continue the process.

On to step 9:
The number 680 fits into 3580 5 times, leaving a remainder of 180.
Put 5 as the next digit of the answer. 
Result so far: 126925.5
Deduct 3400 from 3580 and we're left with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

On to step 10:
680 can be fit into 1800 2 times, resulting in a remainder of 440.
Use 2 as the next digit of our solution. 
Result so far: 126925.52
If we take 1360 away from 1800, we end up with 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Let's proceed to step 11:
The number 680 fits into 4400 6 times, leaving a remainder of 320.
Write down 6 as next digit of the result. 
Result so far: 126925.526
The remainder is 320 after subtracting 4080 from 4400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Let's proceed to step 12:
680 goes into 3200 4 times with a remainder of 480.
Record the quotient 4 as the next digit in the result. 
Result so far: 126925.5264
If we take 2720 away from 3200, we end up with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Moving on to step 13:
The number 680 fits into 4800 7 times, leaving a remainder of 40.
Use 7 as the next digit of our solution. 
Result so far: 126925.52647
If we take 4760 away from 4800, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 14:
The number 680 fits into 400 0 times, leaving a remainder of 400.
The next digit of our result is 0. 
Result so far: 126925.52647
The remainder is 400 after subtracting 0 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Moving on to step 15:
When dividing 4000 by 680, we get 5 with a remainder of 600.
Write down 5 as next digit of the result. 
Result so far: 126925.5264705
If we subtract 3400 from 4000, we get 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

On to step 16:
680 can be fit into 6000 8 times, resulting in a remainder of 560.
The number 8 becomes the next digit in our result. 
Result so far: 126925.52647058
Subtract 5440 from 6000 to get 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

The quotient of the division is 126925.52647058, and the remainder is 5.6e-07.