We're dividing 72511972 by 686 
We want to divide 72511972 by 686.

On to step 1:
If we divide 7 by 686, we get 0 and a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 686

On to step 2:
If we divide 72 by 686, we get 0 and a remainder of 72.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 72 leaves us with 72.
Include the next digit (5) from the dividend after 72, then repeat: 725 / 686

On to step 3:
If we divide 725 by 686, we get 1 and a remainder of 39.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 686 from 725 and we're left with 39.
Take the next digit (1) from the dividend and append it to 39, then repeat: 391 / 686

Going ahead to step 4:
The number 686 fits into 391 0 times, leaving a remainder of 391.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Subtracting 0 from 391 leaves us with 391.
Append the next digit (1) from the dividend to 391 and continue with: 3911 / 686

Moving on to step 5:
686 goes into 3911 5 times with a remainder of 481.
The number 5 becomes the next digit in our result. 
Result so far: 105.0
If we take 3430 away from 3911, we end up with 481.
Grab the next digit (9) from the dividend, add it to 481, then carry on: 4819 / 686

Let's proceed to step 6:
4819 divided by 686 is 7 with a remainder of 17.
The number 7 becomes the next digit in our result. 
Result so far: 1057.0
Deduct 4802 from 4819 and we're left with 17.
Append the next digit (7) from the dividend to 17 and continue with: 177 / 686

Let's proceed to step 7:
177 divided by 686 is 0 with a remainder of 177.
The number 0 becomes the next digit in our result. 
Result so far: 10570.0
If we subtract 0 from 177, we get 177.
Take the next digit (2) from the dividend and append it to 177, then repeat: 1772 / 686

Let's proceed to step 8:
686 can be fit into 1772 2 times, resulting in a remainder of 400.
Write down 2 as next digit of the result. 
Result so far: 105702.0
Subtracting 1372 from 1772 leaves us with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

On to step 9:
686 can be fit into 4000 5 times, resulting in a remainder of 570.
Use 5 as the next digit of our solution. 
Result so far: 105702.5
Subtract 3430 from 4000 to get 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5700, and continue the process.

On to step 10:
686 goes into 5700 8 times with a remainder of 212.
Use 8 as the next digit of our solution. 
Result so far: 105702.58
If we subtract 5488 from 5700, we get 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

Advancing to step 11:
686 goes into 2120 3 times with a remainder of 62.
The number 3 becomes the next digit in our result. 
Result so far: 105702.583
If we subtract 2058 from 2120, we get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Step 12:
620 divided by 686 is 0 with a remainder of 620.
Write down 0 as next digit of the result. 
Result so far: 105702.583
If we take 0 away from 620, we end up with 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6200, and continue the process.

Let's proceed to step 13:
686 goes into 6200 9 times with a remainder of 26.
The next digit of our result is 9. 
Result so far: 105702.58309
Subtracting 6174 from 6200 leaves us with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Going ahead to step 14:
If we divide 260 by 686, we get 0 and a remainder of 260.
Use 0 as the next digit of our solution. 
Result so far: 105702.58309
Subtract 0 from 260 to get 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Step 15:
686 can be fit into 2600 3 times, resulting in a remainder of 542.
Use 3 as the next digit of our solution. 
Result so far: 105702.5830903
Subtract 2058 from 2600 to get 542.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5420, and continue the process.

Let's proceed to step 16:
When dividing 5420 by 686, we get 7 with a remainder of 618.
Use 7 as the next digit of our solution. 
Result so far: 105702.58309037
Deduct 4802 from 5420 and we're left with 618.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6180, and continue the process.

In conclusion, the division gives 105702.58309037 with a balance of 6.18e-07.