Let's divide 628920 by 28
The aim is to understand the frequency of 28 in 628920.

Going ahead to step 1:
If we divide 6 by 28, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Append the next digit (2) from the dividend to 6 and continue with: 62 / 28

Step 2:
28 goes into 62 2 times with a remainder of 6.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtracting 56 from 62 leaves us with 6.
Grab the next digit (8) from the dividend, add it to 6, then carry on: 68 / 28

Going ahead to step 3:
When dividing 68 by 28, we get 2 with a remainder of 12.
The next digit of our result is 2. 
Result so far: 22.0
If we take 56 away from 68, we end up with 12.
Append the next digit (9) from the dividend to 12 and continue with: 129 / 28

Advancing to step 4:
If we divide 129 by 28, we get 4 and a remainder of 17.
The next digit of our result is 4. 
Result so far: 224.0
If we subtract 112 from 129, we get 17.
Take the next digit (2) from the dividend and append it to 17, then repeat: 172 / 28

Going ahead to step 5:
28 can be fit into 172 6 times, resulting in a remainder of 4.
The next digit of our result is 6. 
Result so far: 2246.0
If we subtract 168 from 172, we get 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 28

Moving on to step 6:
28 goes into 40 1 times with a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 22461.0
Subtract 28 from 40 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 7:
If we divide 120 by 28, we get 4 and a remainder of 8.
Use 4 as the next digit of our solution. 
Result so far: 22461.4
If we take 112 away from 120, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 8:
28 goes into 80 2 times with a remainder of 24.
Use 2 as the next digit of our solution. 
Result so far: 22461.42
Subtracting 56 from 80 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 9:
The number 28 fits into 240 8 times, leaving a remainder of 16.
The next digit of our result is 8. 
Result so far: 22461.428
The remainder is 16 after subtracting 224 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 10:
160 divided by 28 is 5 with a remainder of 20.
Use 5 as the next digit of our solution. 
Result so far: 22461.4285
Subtract 140 from 160 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 11:
If we divide 200 by 28, we get 7 and a remainder of 4.
Write down 7 as next digit of the result. 
Result so far: 22461.42857
If we subtract 196 from 200, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 12:
The number 28 fits into 40 1 times, leaving a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 22461.428571
The remainder is 12 after subtracting 28 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 13:
28 goes into 120 4 times with a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 22461.4285714
Deduct 112 from 120 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 14:
If we divide 80 by 28, we get 2 and a remainder of 24.
The number 2 becomes the next digit in our result. 
Result so far: 22461.42857142
Subtracting 56 from 80 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

After the division, we end up with 22461.42857142 and a remainder of 2.4e-08.