We're dividing 17301919 by 680 
The aim is to understand the frequency of 680 in 17301919.

Step 1:
When dividing 1 by 680, we get 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Fetch the next digit (7) from the dividend, attach it to 1 and continue: 17 / 680

Advancing to step 2:
When dividing 17 by 680, we get 0 with a remainder of 17.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 17 and we're left with 17.
Grab the next digit (3) from the dividend, add it to 17, then carry on: 173 / 680

Going ahead to step 3:
The number 680 fits into 173 0 times, leaving a remainder of 173.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 173, we get 173.
Grab the next digit (0) from the dividend, add it to 173, then carry on: 1730 / 680

Moving on to step 4:
The number 680 fits into 1730 2 times, leaving a remainder of 370.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we take 1360 away from 1730, we end up with 370.
Bring next digit (1) of the dividend behind the 370 and repeat the process: 3701 / 680

Going ahead to step 5:
3701 divided by 680 is 5 with a remainder of 301.
Record the quotient 5 as the next digit in the result. 
Result so far: 25.0
Subtract 3400 from 3701 to get 301.
Bring next digit (9) of the dividend behind the 301 and repeat the process: 3019 / 680

On to step 6:
3019 divided by 680 is 4 with a remainder of 299.
Put 4 as the next digit of the answer. 
Result so far: 254.0
Subtracting 2720 from 3019 leaves us with 299.
Include the next digit (1) from the dividend after 299, then repeat: 2991 / 680

Going ahead to step 7:
When dividing 2991 by 680, we get 4 with a remainder of 271.
The number 4 becomes the next digit in our result. 
Result so far: 2544.0
If we subtract 2720 from 2991, we get 271.
Take the next digit (9) from the dividend and append it to 271, then repeat: 2719 / 680

Let's proceed to step 8:
680 goes into 2719 3 times with a remainder of 679.
Put 3 as the next digit of the answer. 
Result so far: 25443.0
The remainder is 679 after subtracting 2040 from 2719.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6790, and continue the process.

Moving on to step 9:
If we divide 6790 by 680, we get 9 and a remainder of 670.
Put 9 as the next digit of the answer. 
Result so far: 25443.9
Subtract 6120 from 6790 to get 670.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6700, and continue the process.

Step 10:
When dividing 6700 by 680, we get 9 with a remainder of 580.
Record the quotient 9 as the next digit in the result. 
Result so far: 25443.99
If we take 6120 away from 6700, we end up with 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

The final result is 25443.99 with a remainder of 0.58.