We look at the division of 22509893 by 680 
The aim is to understand the frequency of 680 in 22509893.

On to step 1:
2 divided by 680 is 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Take the next digit (2) from the dividend and append it to 2, then repeat: 22 / 680

Step 2:
The number 680 fits into 22 0 times, leaving a remainder of 22.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 22 and we're left with 22.
Append the next digit (5) from the dividend to 22 and continue with: 225 / 680

Step 3:
The number 680 fits into 225 0 times, leaving a remainder of 225.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 225 to get 225.
Fetch the next digit (0) from the dividend, attach it to 225 and continue: 2250 / 680

Moving on to step 4:
2250 divided by 680 is 3 with a remainder of 210.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we take 2040 away from 2250, we end up with 210.
Take the next digit (9) from the dividend and append it to 210, then repeat: 2109 / 680

Going ahead to step 5:
2109 divided by 680 is 3 with a remainder of 69.
Use 3 as the next digit of our solution. 
Result so far: 33.0
The remainder is 69 after subtracting 2040 from 2109.
Grab the next digit (8) from the dividend, add it to 69, then carry on: 698 / 680

Step 6:
698 divided by 680 is 1 with a remainder of 18.
Use 1 as the next digit of our solution. 
Result so far: 331.0
Subtract 680 from 698 to get 18.
Append the next digit (9) from the dividend to 18 and continue with: 189 / 680

On to step 7:
189 divided by 680 is 0 with a remainder of 189.
Put 0 as the next digit of the answer. 
Result so far: 3310.0
Subtracting 0 from 189 leaves us with 189.
Bring next digit (3) of the dividend behind the 189 and repeat the process: 1893 / 680

Going ahead to step 8:
When dividing 1893 by 680, we get 2 with a remainder of 533.
The number 2 becomes the next digit in our result. 
Result so far: 33102.0
If we take 1360 away from 1893, we end up with 533.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5330, and continue the process.

Advancing to step 9:
When dividing 5330 by 680, we get 7 with a remainder of 570.
Record the quotient 7 as the next digit in the result. 
Result so far: 33102.7
If we subtract 4760 from 5330, we get 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5700, and continue the process.

Moving on to step 10:
If we divide 5700 by 680, we get 8 and a remainder of 260.
Put 8 as the next digit of the answer. 
Result so far: 33102.78
Deduct 5440 from 5700 and we're left with 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Going ahead to step 11:
2600 divided by 680 is 3 with a remainder of 560.
Use 3 as the next digit of our solution. 
Result so far: 33102.783
If we subtract 2040 from 2600, we get 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

Let's proceed to step 12:
5600 divided by 680 is 8 with a remainder of 160.
Use 8 as the next digit of our solution. 
Result so far: 33102.7838
Deduct 5440 from 5600 and we're left with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Going ahead to step 13:
The number 680 fits into 1600 2 times, leaving a remainder of 240.
Use 2 as the next digit of our solution. 
Result so far: 33102.78382
Subtracting 1360 from 1600 leaves us with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Going ahead to step 14:
If we divide 2400 by 680, we get 3 and a remainder of 360.
Record the quotient 3 as the next digit in the result. 
Result so far: 33102.783823
Subtract 2040 from 2400 to get 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Advancing to step 15:
680 goes into 3600 5 times with a remainder of 200.
Write down 5 as next digit of the result. 
Result so far: 33102.7838235
If we subtract 3400 from 3600, we get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Moving on to step 16:
When dividing 2000 by 680, we get 2 with a remainder of 640.
Record the quotient 2 as the next digit in the result. 
Result so far: 33102.78382352
If we subtract 1360 from 2000, we get 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Our division results in 33102.78382352 with a remaining 6.4e-07.