Let's divide 849663 by 28
The aim is to understand the frequency of 28 in 849663.

On to step 1:
When dividing 8 by 28, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Fetch the next digit (4) from the dividend, attach it to 8 and continue: 84 / 28

Let's proceed to step 2:
28 can be fit into 84 3 times, resulting in a remainder of 0.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
The remainder is 0 after subtracting 84 from 84.
Include the next digit (9) from the dividend after 0, then repeat: 9 / 28

Going ahead to step 3:
28 goes into 9 0 times with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 30.0
Subtract 0 from 9 to get 9.
Fetch the next digit (6) from the dividend, attach it to 9 and continue: 96 / 28

Moving on to step 4:
When dividing 96 by 28, we get 3 with a remainder of 12.
Record the quotient 3 as the next digit in the result. 
Result so far: 303.0
If we take 84 away from 96, we end up with 12.
Fetch the next digit (6) from the dividend, attach it to 12 and continue: 126 / 28

Moving on to step 5:
126 divided by 28 is 4 with a remainder of 14.
Use 4 as the next digit of our solution. 
Result so far: 3034.0
If we subtract 112 from 126, we get 14.
Grab the next digit (3) from the dividend, add it to 14, then carry on: 143 / 28

Step 6:
28 goes into 143 5 times with a remainder of 3.
Write down 5 as next digit of the result. 
Result so far: 30345.0
If we subtract 140 from 143, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 7:
If we divide 30 by 28, we get 1 and a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 30345.1
If we take 28 away from 30, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 8:
The number 28 fits into 20 0 times, leaving a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 30345.1
Deduct 0 from 20 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 9:
The number 28 fits into 200 7 times, leaving a remainder of 4.
The number 7 becomes the next digit in our result. 
Result so far: 30345.107
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.

Step 10:
40 divided by 28 is 1 with a remainder of 12.
Put 1 as the next digit of the answer. 
Result so far: 30345.1071
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.

On to step 11:
28 can be fit into 120 4 times, resulting in a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 30345.10714
If we subtract 112 from 120, we get 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 12:
28 can be fit into 80 2 times, resulting in a remainder of 24.
Write down 2 as next digit of the result. 
Result so far: 30345.107142
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.

Step 13:
The number 28 fits into 240 8 times, leaving a remainder of 16.
The next digit of our result is 8. 
Result so far: 30345.1071428
Subtract 224 from 240 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 14:
160 divided by 28 is 5 with a remainder of 20.
Write down 5 as next digit of the result. 
Result so far: 30345.10714285
Subtracting 140 from 160 leaves us 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.

After the division, we end up with 30345.10714285 and a remainder of 2e-08.