We look at the division of 17571037 by 680 
The aim is to understand the frequency of 680 in 17571037.

On to step 1:
680 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Append the next digit (7) from the dividend to 1 and continue with: 17 / 680

Let's proceed to step 2:
When dividing 17 by 680, we get 0 with a remainder of 17.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 17, we get 17.
Grab the next digit (5) from the dividend, add it to 17, then carry on: 175 / 680

On to step 3:
680 can be fit into 175 0 times, resulting in a remainder of 175.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 175, we get 175.
Grab the next digit (7) from the dividend, add it to 175, then carry on: 1757 / 680

Moving on to step 4:
If we divide 1757 by 680, we get 2 and a remainder of 397.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 397 after subtracting 1360 from 1757.
Append the next digit (1) from the dividend to 397 and continue with: 3971 / 680

Moving on to step 5:
The number 680 fits into 3971 5 times, leaving a remainder of 571.
Write down 5 as next digit of the result. 
Result so far: 25.0
The remainder is 571 after subtracting 3400 from 3971.
Bring next digit (0) of the dividend behind the 571 and repeat the process: 5710 / 680

Let's proceed to step 6:
The number 680 fits into 5710 8 times, leaving a remainder of 270.
Use 8 as the next digit of our solution. 
Result so far: 258.0
Deduct 5440 from 5710 and we're left with 270.
Grab the next digit (3) from the dividend, add it to 270, then carry on: 2703 / 680

Step 7:
The number 680 fits into 2703 3 times, leaving a remainder of 663.
The next digit of our result is 3. 
Result so far: 2583.0
Subtract 2040 from 2703 to get 663.
Grab the next digit (7) from the dividend, add it to 663, then carry on: 6637 / 680

Let's proceed to step 8:
When dividing 6637 by 680, we get 9 with a remainder of 517.
Record the quotient 9 as the next digit in the result. 
Result so far: 25839.0
Subtracting 6120 from 6637 leaves us with 517.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5170, and continue the process.

Advancing to step 9:
If we divide 5170 by 680, we get 7 and a remainder of 410.
Record the quotient 7 as the next digit in the result. 
Result so far: 25839.7
If we subtract 4760 from 5170, we get 410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4100, and continue the process.

Going ahead to step 10:
680 can be fit into 4100 6 times, resulting in a remainder of 20.
Record the quotient 6 as the next digit in the result. 
Result so far: 25839.76
The remainder is 20 after subtracting 4080 from 4100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 11:
680 goes into 200 0 times with a remainder of 200.
Use 0 as the next digit of our solution. 
Result so far: 25839.76
The remainder is 200 after subtracting 0 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Let's proceed to step 12:
The number 680 fits into 2000 2 times, leaving a remainder of 640.
Use 2 as the next digit of our solution. 
Result so far: 25839.7602
The remainder is 640 after subtracting 1360 from 2000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

On to step 13:
If we divide 6400 by 680, we get 9 and a remainder of 280.
Record the quotient 9 as the next digit in the result. 
Result so far: 25839.76029
The remainder is 280 after subtracting 6120 from 6400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Going ahead to step 14:
The number 680 fits into 2800 4 times, leaving a remainder of 80.
Record the quotient 4 as the next digit in the result. 
Result so far: 25839.760294
The remainder is 80 after subtracting 2720 from 2800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Advancing to step 15:
680 can be fit into 800 1 times, resulting in a remainder of 120.
The next digit of our result is 1. 
Result so far: 25839.7602941
If we take 680 away from 800, we end up with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Let's proceed to step 16:
680 can be fit into 1200 1 times, resulting in a remainder of 520.
Use 1 as the next digit of our solution. 
Result so far: 25839.76029411
Subtract 680 from 1200 to get 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

The final outcome is 25839.76029411, with a leftover of 5.2e-07.