We look at the division of 422381 by 28 
The aim is to understand the frequency of 28 in 422381.

Step 1:
The number 28 fits into 4 0 times, leaving a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 28

Advancing to step 2:
The number 28 fits into 42 1 times, leaving a remainder of 14.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 28 away from 42, we end up with 14.
Grab the next digit (2) from the dividend, add it to 14, then carry on: 142 / 28

Moving on to step 3:
28 can be fit into 142 5 times, resulting in a remainder of 2.
Use 5 as the next digit of our solution. 
Result so far: 15.0
Deduct 140 from 142 and we're left with 2.
Grab the next digit (3) from the dividend, add it to 2, then carry on: 23 / 28

Going ahead to step 4:
23 divided by 28 is 0 with a remainder of 23.
Put 0 as the next digit of the answer. 
Result so far: 150.0
If we take 0 away from 23, we end up with 23.
Include the next digit (8) from the dividend after 23, then repeat: 238 / 28

Advancing to step 5:
28 goes into 238 8 times with a remainder of 14.
The next digit of our result is 8. 
Result so far: 1508.0
Subtracting 224 from 238 leaves us with 14.
Append the next digit (1) from the dividend to 14 and continue with: 141 / 28

Let's proceed to step 6:
The number 28 fits into 141 5 times, leaving a remainder of 1.
Put 5 as the next digit of the answer. 
Result so far: 15085.0
If we subtract 140 from 141, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 7:
When dividing 10 by 28, we get 0 with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 15085.0
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 8:
When dividing 100 by 28, we get 3 with a remainder of 16.
Put 3 as the next digit of the answer. 
Result so far: 15085.03
The remainder is 16 after subtracting 84 from 100.
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 9:
28 can be fit into 160 5 times, resulting in a remainder of 20.
Use 5 as the next digit of our solution. 
Result so far: 15085.035
The remainder is 20 after subtracting 140 from 160.
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 10:
200 divided by 28 is 7 with a remainder of 4.
Use 7 as the next digit of our solution. 
Result so far: 15085.0357
The remainder is 4 after subtracting 196 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 11:
28 can be fit into 40 1 times, resulting in a remainder of 12.
Put 1 as the next digit of the answer. 
Result so far: 15085.03571
Deduct 28 from 40 and we're left 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.

Step 12:
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: 15085.035714
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 13:
80 divided by 28 is 2 with a remainder of 24.
Put 2 as the next digit of the answer. 
Result so far: 15085.0357142
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.

Step 14:
If we divide 240 by 28, we get 8 and a remainder of 16.
The number 8 becomes the next digit in our result. 
Result so far: 15085.03571428
If we take 224 away from 240, we end up 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.

The quotient of the division is 15085.03571428, and the remainder is 1.6e-08.