63918069 divided by 686 
The aim is to understand the frequency of 686 in 63918069.

Going ahead to step 1:
When dividing 6 by 686, we get 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 686

On to step 2:
63 divided by 686 is 0 with a remainder of 63.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 63, we get 63.
Grab the next digit (9) from the dividend, add it to 63, then carry on: 639 / 686

Step 3:
The number 686 fits into 639 0 times, leaving a remainder of 639.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 639, we end up with 639.
Grab the next digit (1) from the dividend, add it to 639, then carry on: 6391 / 686

On to step 4:
686 can be fit into 6391 9 times, resulting in a remainder of 217.
Use 9 as the next digit of our solution. 
Result so far: 9.0
The remainder is 217 after subtracting 6174 from 6391.
Include the next digit (8) from the dividend after 217, then repeat: 2178 / 686

Advancing to step 5:
The number 686 fits into 2178 3 times, leaving a remainder of 120.
The next digit of our result is 3. 
Result so far: 93.0
Subtract 2058 from 2178 to get 120.
Take the next digit (0) from the dividend and append it to 120, then repeat: 1200 / 686

Going ahead to step 6:
686 can be fit into 1200 1 times, resulting in a remainder of 514.
Write down 1 as next digit of the result. 
Result so far: 931.0
If we take 686 away from 1200, we end up with 514.
Fetch the next digit (6) from the dividend, attach it to 514 and continue: 5146 / 686

On to step 7:
The number 686 fits into 5146 7 times, leaving a remainder of 344.
Record the quotient 7 as the next digit in the result. 
Result so far: 9317.0
If we take 4802 away from 5146, we end up with 344.
Bring next digit (9) of the dividend behind the 344 and repeat the process: 3449 / 686

Going ahead to step 8:
When dividing 3449 by 686, we get 5 with a remainder of 19.
The number 5 becomes the next digit in our result. 
Result so far: 93175.0
Deduct 3430 from 3449 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Going ahead to step 9:
190 divided by 686 is 0 with a remainder of 190.
The next digit of our result is 0. 
Result so far: 93175.0
Subtract 0 from 190 to get 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Let's proceed to step 10:
686 can be fit into 1900 2 times, resulting in a remainder of 528.
The next digit of our result is 2. 
Result so far: 93175.02
Subtracting 1372 from 1900 leaves us with 528.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5280, and continue the process.

On to step 11:
If we divide 5280 by 686, we get 7 and a remainder of 478.
The next digit of our result is 7. 
Result so far: 93175.027
The remainder is 478 after subtracting 4802 from 5280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4780, and continue the process.

Going ahead to step 12:
686 can be fit into 4780 6 times, resulting in a remainder of 664.
The next digit of our result is 6. 
Result so far: 93175.0276
The remainder is 664 after subtracting 4116 from 4780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6640, and continue the process.

Moving on to step 13:
686 goes into 6640 9 times with a remainder of 466.
Use 9 as the next digit of our solution. 
Result so far: 93175.02769
The remainder is 466 after subtracting 6174 from 6640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4660, and continue the process.

Step 14:
686 goes into 4660 6 times with a remainder of 544.
Record the quotient 6 as the next digit in the result. 
Result so far: 93175.027696
Subtracting 4116 from 4660 leaves us with 544.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5440, and continue the process.

Let's proceed to step 15:
686 goes into 5440 7 times with a remainder of 638.
Put 7 as the next digit of the answer. 
Result so far: 93175.0276967
If we take 4802 away from 5440, we end up with 638.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6380, and continue the process.

Step 16:
When dividing 6380 by 686, we get 9 with a remainder of 206.
Write down 9 as next digit of the result. 
Result so far: 93175.02769679
If we subtract 6174 from 6380, we get 206.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2060, and continue the process.

In conclusion, the division gives 93175.02769679 with a balance of 2.06e-07.