Let's divide 615950 by 28
The aim is to understand the frequency of 28 in 615950.

On to step 1:
The number 28 fits into 6 0 times, leaving a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Bring next digit (1) of the dividend behind the 6 and repeat the process: 61 / 28

Going ahead to step 2:
If we divide 61 by 28, we get 2 and a remainder of 5.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 56 from 61 to get 5.
Append the next digit (5) from the dividend to 5 and continue with: 55 / 28

Going ahead to step 3:
28 can be fit into 55 1 times, resulting in a remainder of 27.
Record the quotient 1 as the next digit in the result. 
Result so far: 21.0
Subtracting 28 from 55 leaves us with 27.
Grab the next digit (9) from the dividend, add it to 27, then carry on: 279 / 28

Moving on to step 4:
The number 28 fits into 279 9 times, leaving a remainder of 27.
Write down 9 as next digit of the result. 
Result so far: 219.0
The remainder is 27 after subtracting 252 from 279.
Take the next digit (5) from the dividend and append it to 27, then repeat: 275 / 28

Moving on to step 5:
28 can be fit into 275 9 times, resulting in a remainder of 23.
Record the quotient 9 as the next digit in the result. 
Result so far: 2199.0
Subtract 252 from 275 to get 23.
Grab the next digit (0) from the dividend, add it to 23, then carry on: 230 / 28

Step 6:
230 divided by 28 is 8 with a remainder of 6.
The next digit of our result is 8. 
Result so far: 21998.0
The remainder is 6 after subtracting 224 from 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 7:
The number 28 fits into 60 2 times, leaving a remainder of 4.
The next digit of our result is 2. 
Result so far: 21998.2
If we subtract 56 from 60, we 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.

Advancing to step 8:
40 divided by 28 is 1 with a remainder of 12.
Use 1 as the next digit of our solution. 
Result so far: 21998.21
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.

On to step 9:
28 goes into 120 4 times with a remainder of 8.
Put 4 as the next digit of the answer. 
Result so far: 21998.214
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.

Step 10:
28 goes into 80 2 times with a remainder of 24.
Use 2 as the next digit of our solution. 
Result so far: 21998.2142
If we subtract 56 from 80, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 11:
The number 28 fits into 240 8 times, leaving a remainder of 16.
The number 8 becomes the next digit in our result. 
Result so far: 21998.21428
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.

On to step 12:
The number 28 fits into 160 5 times, leaving a remainder of 20.
Use 5 as the next digit of our solution. 
Result so far: 21998.214285
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.

Going ahead to step 13:
If we divide 200 by 28, we get 7 and a remainder of 4.
Write down 7 as next digit of the result. 
Result so far: 21998.2142857
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 14:
40 divided by 28 is 1 with a remainder of 12.
Record the quotient 1 as the next digit in the result. 
Result so far: 21998.21428571
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.

The final result is 21998.21428571 with a remainder of 1.2e-08.