We look at the division of 376508 by 28 
The aim is to understand the frequency of 28 in 376508.

Step 1:
When dividing 3 by 28, we get 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Fetch the next digit (7) from the dividend, attach it to 3 and continue: 37 / 28

Moving on to step 2:
37 divided by 28 is 1 with a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 9 after subtracting 28 from 37.
Include the next digit (6) from the dividend after 9, then repeat: 96 / 28

Step 3:
If we divide 96 by 28, we get 3 and a remainder of 12.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
Subtracting 84 from 96 leaves us with 12.
Append the next digit (5) from the dividend to 12 and continue with: 125 / 28

Going ahead to step 4:
28 can be fit into 125 4 times, resulting in a remainder of 13.
Write down 4 as next digit of the result. 
Result so far: 134.0
The remainder is 13 after subtracting 112 from 125.
Bring next digit (0) of the dividend behind the 13 and repeat the process: 130 / 28

Step 5:
If we divide 130 by 28, we get 4 and a remainder of 18.
Write down 4 as next digit of the result. 
Result so far: 1344.0
If we subtract 112 from 130, we get 18.
Take the next digit (8) from the dividend and append it to 18, then repeat: 188 / 28

On to step 6:
28 goes into 188 6 times with a remainder of 20.
The next digit of our result is 6. 
Result so far: 13446.0
If we take 168 away from 188, we end up with 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 7:
When dividing 200 by 28, we get 7 with a remainder of 4.
The next digit of our result is 7. 
Result so far: 13446.7
If we take 196 away from 200, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 8:
40 divided by 28 is 1 with a remainder of 12.
The next digit of our result is 1. 
Result so far: 13446.71
Subtracting 28 from 40 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 9:
If we divide 120 by 28, we get 4 and a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 13446.714
Subtract 112 from 120 to get 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 10:
When dividing 80 by 28, we get 2 with a remainder of 24.
Put 2 as the next digit of the answer. 
Result so far: 13446.7142
If we take 56 away from 80, we end up 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.

Moving on to step 11:
The number 28 fits into 240 8 times, leaving a remainder of 16.
Write down 8 as next digit of the result. 
Result so far: 13446.71428
Deduct 224 from 240 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 12:
160 divided by 28 is 5 with a remainder of 20.
Use 5 as the next digit of our solution. 
Result so far: 13446.714285
Deduct 140 from 160 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 13:
If we divide 200 by 28, we get 7 and a remainder of 4.
The next digit of our result is 7. 
Result so far: 13446.7142857
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.

Advancing to step 14:
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: 13446.71428571
If we take 28 away from 40, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

After the division, we end up with 13446.71428571 and a remainder of 1.2e-08.