We look at the division of 56048021 by 686 
The aim is to understand the frequency of 686 in 56048021.

Let's proceed to step 1:
686 goes into 5 0 times with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Fetch the next digit (6) from the dividend, attach it to 5 and continue: 56 / 686

On to step 2:
If we divide 56 by 686, we get 0 and a remainder of 56.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 56, we get 56.
Grab the next digit (0) from the dividend, add it to 56, then carry on: 560 / 686

On to step 3:
686 goes into 560 0 times with a remainder of 560.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 560 and we're left with 560.
Grab the next digit (4) from the dividend, add it to 560, then carry on: 5604 / 686

Advancing to step 4:
5604 divided by 686 is 8 with a remainder of 116.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Subtracting 5488 from 5604 leaves us with 116.
Grab the next digit (8) from the dividend, add it to 116, then carry on: 1168 / 686

Going ahead to step 5:
When dividing 1168 by 686, we get 1 with a remainder of 482.
Record the quotient 1 as the next digit in the result. 
Result so far: 81.0
The remainder is 482 after subtracting 686 from 1168.
Grab the next digit (0) from the dividend, add it to 482, then carry on: 4820 / 686

Step 6:
686 goes into 4820 7 times with a remainder of 18.
Use 7 as the next digit of our solution. 
Result so far: 817.0
Subtract 4802 from 4820 to get 18.
Include the next digit (2) from the dividend after 18, then repeat: 182 / 686

On to step 7:
When dividing 182 by 686, we get 0 with a remainder of 182.
The next digit of our result is 0. 
Result so far: 8170.0
If we subtract 0 from 182, we get 182.
Include the next digit (1) from the dividend after 182, then repeat: 1821 / 686

Advancing to step 8:
The number 686 fits into 1821 2 times, leaving a remainder of 449.
Write down 2 as next digit of the result. 
Result so far: 81702.0
The remainder is 449 after subtracting 1372 from 1821.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4490, and continue the process.

On to step 9:
If we divide 4490 by 686, we get 6 and a remainder of 374.
Record the quotient 6 as the next digit in the result. 
Result so far: 81702.6
Subtract 4116 from 4490 to get 374.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3740, and continue the process.

On to step 10:
If we divide 3740 by 686, we get 5 and a remainder of 310.
Write down 5 as next digit of the result. 
Result so far: 81702.65
Subtract 3430 from 3740 to get 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Moving on to step 11:
686 can be fit into 3100 4 times, resulting in a remainder of 356.
Use 4 as the next digit of our solution. 
Result so far: 81702.654
The remainder is 356 after subtracting 2744 from 3100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3560, and continue the process.

Moving on to step 12:
When dividing 3560 by 686, we get 5 with a remainder of 130.
Use 5 as the next digit of our solution. 
Result so far: 81702.6545
The remainder is 130 after subtracting 3430 from 3560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Step 13:
The number 686 fits into 1300 1 times, leaving a remainder of 614.
Put 1 as the next digit of the answer. 
Result so far: 81702.65451
If we take 686 away from 1300, we end up with 614.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6140, and continue the process.

Let's proceed to step 14:
If we divide 6140 by 686, we get 8 and a remainder of 652.
Record the quotient 8 as the next digit in the result. 
Result so far: 81702.654518
If we take 5488 away from 6140, we end up with 652.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6520, and continue the process.

Advancing to step 15:
When dividing 6520 by 686, we get 9 with a remainder of 346.
Use 9 as the next digit of our solution. 
Result so far: 81702.6545189
If we take 6174 away from 6520, we end up with 346.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3460, and continue the process.

Advancing to step 16:
686 goes into 3460 5 times with a remainder of 30.
The next digit of our result is 5. 
Result so far: 81702.65451895
Subtracting 3430 from 3460 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

The final result is 81702.65451895 with a remainder of 3e-08.