877321 divided by 28 
The aim is to understand the frequency of 28 in 877321.

Step 1:
8 divided by 28 is 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Fetch the next digit (7) from the dividend, attach it to 8 and continue: 87 / 28

Moving on to step 2:
28 can be fit into 87 3 times, resulting in a remainder of 3.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtract 84 from 87 to get 3.
Take the next digit (7) from the dividend and append it to 3, then repeat: 37 / 28

Advancing to step 3:
When dividing 37 by 28, we get 1 with a remainder of 9.
The next digit of our result is 1. 
Result so far: 31.0
If we subtract 28 from 37, we get 9.
Grab the next digit (3) from the dividend, add it to 9, then carry on: 93 / 28

Moving on to step 4:
If we divide 93 by 28, we get 3 and a remainder of 9.
Write down 3 as next digit of the result. 
Result so far: 313.0
Subtract 84 from 93 to get 9.
Bring next digit (2) of the dividend behind the 9 and repeat the process: 92 / 28

Let's proceed to step 5:
28 goes into 92 3 times with a remainder of 8.
Use 3 as the next digit of our solution. 
Result so far: 3133.0
If we subtract 84 from 92, we get 8.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 28

Step 6:
81 divided by 28 is 2 with a remainder of 25.
Put 2 as the next digit of the answer. 
Result so far: 31332.0
If we subtract 56 from 81, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Moving on to step 7:
250 divided by 28 is 8 with a remainder of 26.
Use 8 as the next digit of our solution. 
Result so far: 31332.8
Deduct 224 from 250 and we're left with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

On to step 8:
The number 28 fits into 260 9 times, leaving a remainder of 8.
Write down 9 as next digit of the result. 
Result so far: 31332.89
Subtract 252 from 260 to 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.

On to step 9:
When dividing 80 by 28, we get 2 with a remainder of 24.
Put 2 as the next digit of the answer. 
Result so far: 31332.892
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 10:
The number 28 fits into 240 8 times, leaving a remainder of 16.
Put 8 as the next digit of the answer. 
Result so far: 31332.8928
The remainder is 16 after subtracting 224 from 240.
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 11:
The number 28 fits into 160 5 times, leaving a remainder of 20.
Record the quotient 5 as the next digit in the result. 
Result so far: 31332.89285
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.

Advancing to step 12:
28 goes into 200 7 times with a remainder of 4.
Write down 7 as next digit of the result. 
Result so far: 31332.892857
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.

Step 13:
The number 28 fits into 40 1 times, leaving a remainder of 12.
The next digit of our result is 1. 
Result so far: 31332.8928571
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.

Step 14:
120 divided by 28 is 4 with a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 31332.89285714
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.

After the division, we end up with 31332.89285714 and a remainder of 8e-09.