52683173 divided by 686 
The aim is to understand the frequency of 686 in 52683173.

Step 1:
686 can be fit into 5 0 times, resulting in a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Bring next digit (2) of the dividend behind the 5 and repeat the process: 52 / 686

Step 2:
When dividing 52 by 686, we get 0 with a remainder of 52.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 52 to get 52.
Include the next digit (6) from the dividend after 52, then repeat: 526 / 686

Advancing to step 3:
When dividing 526 by 686, we get 0 with a remainder of 526.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 526 and we're left with 526.
Grab the next digit (8) from the dividend, add it to 526, then carry on: 5268 / 686

Moving on to step 4:
686 can be fit into 5268 7 times, resulting in a remainder of 466.
Use 7 as the next digit of our solution. 
Result so far: 7.0
The remainder is 466 after subtracting 4802 from 5268.
Append the next digit (3) from the dividend to 466 and continue with: 4663 / 686

Advancing to step 5:
If we divide 4663 by 686, we get 6 and a remainder of 547.
Record the quotient 6 as the next digit in the result. 
Result so far: 76.0
Subtract 4116 from 4663 to get 547.
Fetch the next digit (1) from the dividend, attach it to 547 and continue: 5471 / 686

Moving on to step 6:
686 goes into 5471 7 times with a remainder of 669.
Record the quotient 7 as the next digit in the result. 
Result so far: 767.0
Subtract 4802 from 5471 to get 669.
Fetch the next digit (7) from the dividend, attach it to 669 and continue: 6697 / 686

Step 7:
When dividing 6697 by 686, we get 9 with a remainder of 523.
Use 9 as the next digit of our solution. 
Result so far: 7679.0
Subtracting 6174 from 6697 leaves us with 523.
Grab the next digit (3) from the dividend, add it to 523, then carry on: 5233 / 686

Step 8:
686 goes into 5233 7 times with a remainder of 431.
Record the quotient 7 as the next digit in the result. 
Result so far: 76797.0
Subtract 4802 from 5233 to get 431.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4310, and continue the process.

On to step 9:
4310 divided by 686 is 6 with a remainder of 194.
The next digit of our result is 6. 
Result so far: 76797.6
If we subtract 4116 from 4310, we get 194.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1940, and continue the process.

Going ahead to step 10:
The number 686 fits into 1940 2 times, leaving a remainder of 568.
Use 2 as the next digit of our solution. 
Result so far: 76797.62
If we subtract 1372 from 1940, we get 568.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5680, and continue the process.

Moving on to step 11:
686 can be fit into 5680 8 times, resulting in a remainder of 192.
The next digit of our result is 8. 
Result so far: 76797.628
If we take 5488 away from 5680, we end up with 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

On to step 12:
1920 divided by 686 is 2 with a remainder of 548.
Record the quotient 2 as the next digit in the result. 
Result so far: 76797.6282
The remainder is 548 after subtracting 1372 from 1920.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5480, and continue the process.

On to step 13:
686 can be fit into 5480 7 times, resulting in a remainder of 678.
Use 7 as the next digit of our solution. 
Result so far: 76797.62827
Subtracting 4802 from 5480 leaves us with 678.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6780, and continue the process.

Advancing to step 14:
The number 686 fits into 6780 9 times, leaving a remainder of 606.
Record the quotient 9 as the next digit in the result. 
Result so far: 76797.628279
Deduct 6174 from 6780 and we're left with 606.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6060, and continue the process.

On to step 15:
686 goes into 6060 8 times with a remainder of 572.
Write down 8 as next digit of the result. 
Result so far: 76797.6282798
Deduct 5488 from 6060 and we're left with 572.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5720, and continue the process.

Let's proceed to step 16:
686 goes into 5720 8 times with a remainder of 232.
Put 8 as the next digit of the answer. 
Result so far: 76797.62827988
If we take 5488 away from 5720, we end up with 232.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2320, and continue the process.

After the division, we end up with 76797.62827988 and a remainder of 2.32e-07.