We divide 991745 by 28
The aim is to understand the frequency of 28 in 991745.

Let's proceed to step 1:
9 divided by 28 is 0 with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 28

Moving on to step 2:
If we divide 99 by 28, we get 3 and a remainder of 15.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtracting 84 from 99 leaves us with 15.
Fetch the next digit (1) from the dividend, attach it to 15 and continue: 151 / 28

On to step 3:
When dividing 151 by 28, we get 5 with a remainder of 11.
Write down 5 as next digit of the result. 
Result so far: 35.0
Subtracting 140 from 151 leaves us with 11.
Bring next digit (7) of the dividend behind the 11 and repeat the process: 117 / 28

Going ahead to step 4:
When dividing 117 by 28, we get 4 with a remainder of 5.
Record the quotient 4 as the next digit in the result. 
Result so far: 354.0
Deduct 112 from 117 and we're left with 5.
Take the next digit (4) from the dividend and append it to 5, then repeat: 54 / 28

Let's proceed to step 5:
28 can be fit into 54 1 times, resulting in a remainder of 26.
The number 1 becomes the next digit in our result. 
Result so far: 3541.0
If we subtract 28 from 54, we get 26.
Include the next digit (5) from the dividend after 26, then repeat: 265 / 28

Step 6:
The number 28 fits into 265 9 times, leaving a remainder of 13.
Write down 9 as next digit of the result. 
Result so far: 35419.0
Deduct 252 from 265 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 7:
The number 28 fits into 130 4 times, leaving a remainder of 18.
Record the quotient 4 as the next digit in the result. 
Result so far: 35419.4
If we subtract 112 from 130, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 8:
If we divide 180 by 28, we get 6 and a remainder of 12.
Put 6 as the next digit of the answer. 
Result so far: 35419.46
Subtracting 168 from 180 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 9:
The number 28 fits into 120 4 times, leaving a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 35419.464
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.

Let's proceed to step 10:
When dividing 80 by 28, we get 2 with a remainder of 24.
Write down 2 as next digit of the result. 
Result so far: 35419.4642
Subtracting 56 from 80 leaves us 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.

Moving on to step 11:
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: 35419.46428
If we subtract 224 from 240, we 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 12:
When dividing 160 by 28, we get 5 with a remainder of 20.
Write down 5 as next digit of the result. 
Result so far: 35419.464285
The remainder is 20 after subtracting 140 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 13:
If we divide 200 by 28, we get 7 and a remainder of 4.
Put 7 as the next digit of the answer. 
Result so far: 35419.4642857
If we take 196 away from 200, we end up 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.

Moving on to step 14:
If we divide 40 by 28, we get 1 and a remainder of 12.
Record the quotient 1 as the next digit in the result. 
Result so far: 35419.46428571
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.

After the division, we end up with 35419.46428571 and a remainder of 1.2e-08.