68581791 ÷ 686 
Let's see how many times 686 fits into 68581791.

On to step 1:
If we divide 6 by 686, we get 0 and a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Fetch the next digit (8) from the dividend, attach it to 6 and continue: 68 / 686

Let's proceed to step 2:
The number 686 fits into 68 0 times, leaving a remainder of 68.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 68, we get 68.
Fetch the next digit (5) from the dividend, attach it to 68 and continue: 685 / 686

Moving on to step 3:
686 goes into 685 0 times with a remainder of 685.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 685 to get 685.
Include the next digit (8) from the dividend after 685, then repeat: 6858 / 686

Moving on to step 4:
6858 divided by 686 is 9 with a remainder of 684.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Subtract 6174 from 6858 to get 684.
Include the next digit (1) from the dividend after 684, then repeat: 6841 / 686

Going ahead to step 5:
686 goes into 6841 9 times with a remainder of 667.
Use 9 as the next digit of our solution. 
Result so far: 99.0
If we take 6174 away from 6841, we end up with 667.
Include the next digit (7) from the dividend after 667, then repeat: 6677 / 686

Moving on to step 6:
When dividing 6677 by 686, we get 9 with a remainder of 503.
The next digit of our result is 9. 
Result so far: 999.0
If we subtract 6174 from 6677, we get 503.
Grab the next digit (9) from the dividend, add it to 503, then carry on: 5039 / 686

Moving on to step 7:
If we divide 5039 by 686, we get 7 and a remainder of 237.
Put 7 as the next digit of the answer. 
Result so far: 9997.0
The remainder is 237 after subtracting 4802 from 5039.
Append the next digit (1) from the dividend to 237 and continue with: 2371 / 686

Moving on to step 8:
2371 divided by 686 is 3 with a remainder of 313.
Record the quotient 3 as the next digit in the result. 
Result so far: 99973.0
The remainder is 313 after subtracting 2058 from 2371.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3130, and continue the process.

Step 9:
3130 divided by 686 is 4 with a remainder of 386.
Record the quotient 4 as the next digit in the result. 
Result so far: 99973.4
Subtract 2744 from 3130 to get 386.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3860, and continue the process.

Going ahead to step 10:
If we divide 3860 by 686, we get 5 and a remainder of 430.
The next digit of our result is 5. 
Result so far: 99973.45
If we take 3430 away from 3860, we end up with 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4300, and continue the process.

Moving on to step 11:
If we divide 4300 by 686, we get 6 and a remainder of 184.
The number 6 becomes the next digit in our result. 
Result so far: 99973.456
Deduct 4116 from 4300 and we're left with 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Moving on to step 12:
If we divide 1840 by 686, we get 2 and a remainder of 468.
Use 2 as the next digit of our solution. 
Result so far: 99973.4562
Deduct 1372 from 1840 and we're left with 468.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4680, and continue the process.

Moving on to step 13:
686 can be fit into 4680 6 times, resulting in a remainder of 564.
The number 6 becomes the next digit in our result. 
Result so far: 99973.45626
Deduct 4116 from 4680 and we're left with 564.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5640, and continue the process.

On to step 14:
When dividing 5640 by 686, we get 8 with a remainder of 152.
The number 8 becomes the next digit in our result. 
Result so far: 99973.456268
If we subtract 5488 from 5640, we get 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

Moving on to step 15:
If we divide 1520 by 686, we get 2 and a remainder of 148.
Write down 2 as next digit of the result. 
Result so far: 99973.4562682
If we take 1372 away from 1520, we end up with 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

Moving on to step 16:
If we divide 1480 by 686, we get 2 and a remainder of 108.
Record the quotient 2 as the next digit in the result. 
Result so far: 99973.45626822
If we take 1372 away from 1480, we end up with 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

The quotient of the division is 99973.45626822, and the remainder is 1.08e-07.