We're dividing 843045 by 28 
The aim is to understand the frequency of 28 in 843045.

Advancing to step 1:
When dividing 8 by 28, we get 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Include the next digit (4) from the dividend after 8, then repeat: 84 / 28

Advancing to step 2:
84 divided by 28 is 3 with a remainder of 0.
Write down 3 as next digit of the result. 
Result so far: 3.0
Deduct 84 from 84 and we're left with 0.
Include the next digit (3) from the dividend after 0, then repeat: 3 / 28

Step 3:
If we divide 3 by 28, we get 0 and a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 30.0
Subtracting 0 from 3 leaves us with 3.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 28

Advancing to step 4:
28 goes into 30 1 times with a remainder of 2.
Record the quotient 1 as the next digit in the result. 
Result so far: 301.0
If we subtract 28 from 30, we get 2.
Append the next digit (4) from the dividend to 2 and continue with: 24 / 28

Going ahead to step 5:
If we divide 24 by 28, we get 0 and a remainder of 24.
The number 0 becomes the next digit in our result. 
Result so far: 3010.0
If we subtract 0 from 24, we get 24.
Grab the next digit (5) from the dividend, add it to 24, then carry on: 245 / 28

Advancing to step 6:
The number 28 fits into 245 8 times, leaving a remainder of 21.
Record the quotient 8 as the next digit in the result. 
Result so far: 30108.0
If we subtract 224 from 245, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 7:
28 can be fit into 210 7 times, resulting in a remainder of 14.
The number 7 becomes the next digit in our result. 
Result so far: 30108.7
The remainder is 14 after subtracting 196 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 8:
140 divided by 28 is 5 with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 30108.75
The remainder is 0 after subtracting 140 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
When dividing 0 by 28, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 30108.75
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 10:
If we divide 0 by 28, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 30108.75
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 30108.75 with a remainder of 0.0.