68608170 ÷ 561 
We want to figure out the number of times 68608170 can be divided by 561.

On to step 1:
561 can be fit into 6 0 times, resulting in a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Take the next digit (8) from the dividend and append it to 6, then repeat: 68 / 561

Going ahead to step 2:
If we divide 68 by 561, we get 0 and a remainder of 68.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 68 after subtracting 0 from 68.
Grab the next digit (6) from the dividend, add it to 68, then carry on: 686 / 561

Step 3:
If we divide 686 by 561, we get 1 and a remainder of 125.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 561 from 686 leaves us with 125.
Grab the next digit (0) from the dividend, add it to 125, then carry on: 1250 / 561

On to step 4:
When dividing 1250 by 561, we get 2 with a remainder of 128.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
Deduct 1122 from 1250 and we're left with 128.
Grab the next digit (8) from the dividend, add it to 128, then carry on: 1288 / 561

Going ahead to step 5:
561 goes into 1288 2 times with a remainder of 166.
Record the quotient 2 as the next digit in the result. 
Result so far: 122.0
Subtracting 1122 from 1288 leaves us with 166.
Bring next digit (1) of the dividend behind the 166 and repeat the process: 1661 / 561

Step 6:
561 goes into 1661 2 times with a remainder of 539.
Write down 2 as next digit of the result. 
Result so far: 1222.0
If we take 1122 away from 1661, we end up with 539.
Bring next digit (7) of the dividend behind the 539 and repeat the process: 5397 / 561

Step 7:
When dividing 5397 by 561, we get 9 with a remainder of 348.
Use 9 as the next digit of our solution. 
Result so far: 12229.0
Subtract 5049 from 5397 to get 348.
Append the next digit (0) from the dividend to 348 and continue with: 3480 / 561

Moving on to step 8:
561 can be fit into 3480 6 times, resulting in a remainder of 114.
The number 6 becomes the next digit in our result. 
Result so far: 122296.0
If we subtract 3366 from 3480, we get 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Going ahead to step 9:
When dividing 1140 by 561, we get 2 with a remainder of 18.
Use 2 as the next digit of our solution. 
Result so far: 122296.2
Deduct 1122 from 1140 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 10:
The number 561 fits into 180 0 times, leaving a remainder of 180.
Write down 0 as next digit of the result. 
Result so far: 122296.2
Subtract 0 from 180 to get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Going ahead to step 11:
If we divide 1800 by 561, we get 3 and a remainder of 117.
Write down 3 as next digit of the result. 
Result so far: 122296.203
If we take 1683 away from 1800, we end up with 117.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1170, and continue the process.

Going ahead to step 12:
The number 561 fits into 1170 2 times, leaving a remainder of 48.
Record the quotient 2 as the next digit in the result. 
Result so far: 122296.2032
If we subtract 1122 from 1170, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 13:
480 divided by 561 is 0 with a remainder of 480.
The next digit of our result is 0. 
Result so far: 122296.2032
If we subtract 0 from 480, we get 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 14:
4800 divided by 561 is 8 with a remainder of 312.
Write down 8 as next digit of the result. 
Result so far: 122296.203208
The remainder is 312 after subtracting 4488 from 4800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3120, and continue the process.

Moving on to step 15:
3120 divided by 561 is 5 with a remainder of 315.
Record the quotient 5 as the next digit in the result. 
Result so far: 122296.2032085
If we subtract 2805 from 3120, we get 315.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3150, and continue the process.

Step 16:
3150 divided by 561 is 5 with a remainder of 345.
Record the quotient 5 as the next digit in the result. 
Result so far: 122296.20320855
Subtract 2805 from 3150 to get 345.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3450, and continue the process.

The final result is 122296.20320855 with a remainder of 3.45e-07.