We're dividing 623376 by 28 
The aim is to understand the frequency of 28 in 623376.

On to step 1:
If we divide 6 by 28, we get 0 and a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Take the next digit (2) from the dividend and append it to 6, then repeat: 62 / 28

Let's proceed to step 2:
62 divided by 28 is 2 with a remainder of 6.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we take 56 away from 62, we end up with 6.
Bring next digit (3) of the dividend behind the 6 and repeat the process: 63 / 28

Let's proceed to step 3:
28 can be fit into 63 2 times, resulting in a remainder of 7.
Put 2 as the next digit of the answer. 
Result so far: 22.0
Subtract 56 from 63 to get 7.
Take the next digit (3) from the dividend and append it to 7, then repeat: 73 / 28

Let's proceed to step 4:
28 can be fit into 73 2 times, resulting in a remainder of 17.
The number 2 becomes the next digit in our result. 
Result so far: 222.0
Subtract 56 from 73 to get 17.
Take the next digit (7) from the dividend and append it to 17, then repeat: 177 / 28

Advancing to step 5:
The number 28 fits into 177 6 times, leaving a remainder of 9.
The next digit of our result is 6. 
Result so far: 2226.0
Deduct 168 from 177 and we're left with 9.
Grab the next digit (6) from the dividend, add it to 9, then carry on: 96 / 28

Advancing to step 6:
When dividing 96 by 28, we get 3 with a remainder of 12.
Write down 3 as next digit of the result. 
Result so far: 22263.0
If we subtract 84 from 96, we 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.

Let's proceed to step 7:
When dividing 120 by 28, we get 4 with a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 22263.4
Deduct 112 from 120 and we're left 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.

Let's proceed to step 8:
28 can be fit into 80 2 times, resulting in a remainder of 24.
Put 2 as the next digit of the answer. 
Result so far: 22263.42
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.

On to step 9:
If we divide 240 by 28, we get 8 and a remainder of 16.
Write down 8 as next digit of the result. 
Result so far: 22263.428
If we take 224 away from 240, we end up 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 10:
160 divided by 28 is 5 with a remainder of 20.
Record the quotient 5 as the next digit in the result. 
Result so far: 22263.4285
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.

On to step 11:
200 divided by 28 is 7 with a remainder of 4.
Use 7 as the next digit of our solution. 
Result so far: 22263.42857
Subtracting 196 from 200 leaves us 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.

On to step 12:
28 can be fit into 40 1 times, resulting in a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 22263.428571
Subtracting 28 from 40 leaves us 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.

Advancing to step 13:
If we divide 120 by 28, we get 4 and a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 22263.4285714
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.

Let's proceed to step 14:
28 goes into 80 2 times with a remainder of 24.
Put 2 as the next digit of the answer. 
Result so far: 22263.42857142
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.

In conclusion, the division gives 22263.42857142 with a balance of 2.4e-08.