899709 ÷ 28 
The aim is to understand the frequency of 28 in 899709.

Step 1:
When dividing 8 by 28, we get 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Take the next digit (9) from the dividend and append it to 8, then repeat: 89 / 28

Advancing to step 2:
The number 28 fits into 89 3 times, leaving a remainder of 5.
Put 3 as the next digit of the answer. 
Result so far: 3.0
The remainder is 5 after subtracting 84 from 89.
Grab the next digit (9) from the dividend, add it to 5, then carry on: 59 / 28

Let's proceed to step 3:
The number 28 fits into 59 2 times, leaving a remainder of 3.
The number 2 becomes the next digit in our result. 
Result so far: 32.0
If we subtract 56 from 59, we get 3.
Include the next digit (7) from the dividend after 3, then repeat: 37 / 28

Advancing to step 4:
The number 28 fits into 37 1 times, leaving a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 321.0
Deduct 28 from 37 and we're left with 9.
Include the next digit (0) from the dividend after 9, then repeat: 90 / 28

Moving on to step 5:
When dividing 90 by 28, we get 3 with a remainder of 6.
Use 3 as the next digit of our solution. 
Result so far: 3213.0
If we subtract 84 from 90, we get 6.
Fetch the next digit (9) from the dividend, attach it to 6 and continue: 69 / 28

Step 6:
69 divided by 28 is 2 with a remainder of 13.
Use 2 as the next digit of our solution. 
Result so far: 32132.0
Subtracting 56 from 69 leaves us with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 7:
28 can be fit into 130 4 times, resulting in a remainder of 18.
Use 4 as the next digit of our solution. 
Result so far: 32132.4
Subtract 112 from 130 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 8:
180 divided by 28 is 6 with a remainder of 12.
Write down 6 as next digit of the result. 
Result so far: 32132.46
Deduct 168 from 180 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.

On to step 9:
28 goes into 120 4 times with a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 32132.464
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.

Advancing to step 10:
If we divide 80 by 28, we get 2 and a remainder of 24.
Write down 2 as next digit of the result. 
Result so far: 32132.4642
Deduct 56 from 80 and we're left 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.

Going ahead to step 11:
When dividing 240 by 28, we get 8 with a remainder of 16.
Record the quotient 8 as the next digit in the result. 
Result so far: 32132.46428
Subtracting 224 from 240 leaves us 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.

On to step 12:
The number 28 fits into 160 5 times, leaving a remainder of 20.
Write down 5 as next digit of the result. 
Result so far: 32132.464285
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 13:
28 can be fit into 200 7 times, resulting in a remainder of 4.
Use 7 as the next digit of our solution. 
Result so far: 32132.4642857
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.

Going ahead to step 14:
40 divided by 28 is 1 with a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 32132.46428571
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.

After the division, we end up with 32132.46428571 and a remainder of 1.2e-08.