We're dividing 443582 by 28 
The aim is to understand the frequency of 28 in 443582.

Let's proceed to step 1:
4 divided by 28 is 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Fetch the next digit (4) from the dividend, attach it to 4 and continue: 44 / 28

Going ahead to step 2:
28 can be fit into 44 1 times, resulting in a remainder of 16.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 28 from 44, we get 16.
Bring next digit (3) of the dividend behind the 16 and repeat the process: 163 / 28

Advancing to step 3:
28 goes into 163 5 times with a remainder of 23.
Put 5 as the next digit of the answer. 
Result so far: 15.0
If we take 140 away from 163, we end up with 23.
Append the next digit (5) from the dividend to 23 and continue with: 235 / 28

On to step 4:
If we divide 235 by 28, we get 8 and a remainder of 11.
Write down 8 as next digit of the result. 
Result so far: 158.0
Deduct 224 from 235 and we're left with 11.
Fetch the next digit (8) from the dividend, attach it to 11 and continue: 118 / 28

Going ahead to step 5:
If we divide 118 by 28, we get 4 and a remainder of 6.
The next digit of our result is 4. 
Result so far: 1584.0
If we take 112 away from 118, we end up with 6.
Grab the next digit (2) from the dividend, add it to 6, then carry on: 62 / 28

Step 6:
If we divide 62 by 28, we get 2 and a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 15842.0
Subtract 56 from 62 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 7:
The number 28 fits into 60 2 times, leaving a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 15842.2
The remainder is 4 after subtracting 56 from 60.
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:
28 can be fit into 40 1 times, resulting in a remainder of 12.
Record the quotient 1 as the next digit in the result. 
Result so far: 15842.21
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.

Going ahead to step 9:
120 divided by 28 is 4 with a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 15842.214
The remainder is 8 after subtracting 112 from 120.
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.
The number 2 becomes the next digit in our result. 
Result so far: 15842.2142
Subtract 56 from 80 to get 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 11:
28 goes into 240 8 times with a remainder of 16.
The number 8 becomes the next digit in our result. 
Result so far: 15842.21428
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.

Moving on to step 12:
28 can be fit into 160 5 times, resulting in a remainder of 20.
Put 5 as the next digit of the answer. 
Result so far: 15842.214285
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.

Moving on to step 13:
If we divide 200 by 28, we get 7 and a remainder of 4.
Use 7 as the next digit of our solution. 
Result so far: 15842.2142857
Subtract 196 from 200 to 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 14:
40 divided by 28 is 1 with a remainder of 12.
Put 1 as the next digit of the answer. 
Result so far: 15842.21428571
If we subtract 28 from 40, we 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.

After the division, we end up with 15842.21428571 and a remainder of 1.2e-08.