813597 divided by 28 
The aim is to understand the frequency of 28 in 813597.

Step 1:
28 can be fit into 8 0 times, resulting in a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Append the next digit (1) from the dividend to 8 and continue with: 81 / 28

Moving on to step 2:
28 can be fit into 81 2 times, resulting in a remainder of 25.
The next digit of our result is 2. 
Result so far: 2.0
The remainder is 25 after subtracting 56 from 81.
Bring next digit (3) of the dividend behind the 25 and repeat the process: 253 / 28

Step 3:
28 goes into 253 9 times with a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 29.0
The remainder is 1 after subtracting 252 from 253.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 28

Moving on to step 4:
28 can be fit into 15 0 times, resulting in a remainder of 15.
Use 0 as the next digit of our solution. 
Result so far: 290.0
Deduct 0 from 15 and we're left with 15.
Append the next digit (9) from the dividend to 15 and continue with: 159 / 28

On to step 5:
The number 28 fits into 159 5 times, leaving a remainder of 19.
The number 5 becomes the next digit in our result. 
Result so far: 2905.0
Subtract 140 from 159 to get 19.
Fetch the next digit (7) from the dividend, attach it to 19 and continue: 197 / 28

Moving on to step 6:
When dividing 197 by 28, we get 7 with a remainder of 1.
Write down 7 as next digit of the result. 
Result so far: 29057.0
If we subtract 196 from 197, 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.

Step 7:
When dividing 10 by 28, we get 0 with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 29057.0
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.

Going ahead to step 8:
When dividing 100 by 28, we get 3 with a remainder of 16.
Use 3 as the next digit of our solution. 
Result so far: 29057.03
Subtracting 84 from 100 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 9:
160 divided by 28 is 5 with a remainder of 20.
Put 5 as the next digit of the answer. 
Result so far: 29057.035
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.

Let's proceed to step 10:
When dividing 200 by 28, we get 7 with a remainder of 4.
The next digit of our result is 7. 
Result so far: 29057.0357
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 11:
When dividing 40 by 28, we get 1 with a remainder of 12.
Record the quotient 1 as the next digit in the result. 
Result so far: 29057.03571
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.

Let's proceed to step 12:
When dividing 120 by 28, we get 4 with a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 29057.035714
Subtracting 112 from 120 leaves us 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.

Moving on to step 13:
80 divided by 28 is 2 with a remainder of 24.
The next digit of our result is 2. 
Result so far: 29057.0357142
The remainder is 24 after subtracting 56 from 80.
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:
28 goes into 240 8 times with a remainder of 16.
Use 8 as the next digit of our solution. 
Result so far: 29057.03571428
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.

In conclusion, the division gives 29057.03571428 with a balance of 1.6e-08.