18758451 ÷ 28 
The aim is to understand the frequency of 28 in 18758451.

Moving on to step 1:
The number 28 fits into 1 0 times, leaving a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Bring next digit (8) of the dividend behind the 1 and repeat the process: 18 / 28

Going ahead to step 2:
28 goes into 18 0 times with a remainder of 18.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 18, we end up with 18.
Take the next digit (7) from the dividend and append it to 18, then repeat: 187 / 28

Step 3:
28 goes into 187 6 times with a remainder of 19.
Write down 6 as next digit of the result. 
Result so far: 6.0
If we take 168 away from 187, we end up with 19.
Append the next digit (5) from the dividend to 19 and continue with: 195 / 28

Step 4:
28 goes into 195 6 times with a remainder of 27.
Record the quotient 6 as the next digit in the result. 
Result so far: 66.0
The remainder is 27 after subtracting 168 from 195.
Grab the next digit (8) from the dividend, add it to 27, then carry on: 278 / 28

On to step 5:
28 can be fit into 278 9 times, resulting in a remainder of 26.
The next digit of our result is 9. 
Result so far: 669.0
The remainder is 26 after subtracting 252 from 278.
Bring next digit (4) of the dividend behind the 26 and repeat the process: 264 / 28

Let's proceed to step 6:
The number 28 fits into 264 9 times, leaving a remainder of 12.
The number 9 becomes the next digit in our result. 
Result so far: 6699.0
Subtract 252 from 264 to get 12.
Include the next digit (5) from the dividend after 12, then repeat: 125 / 28

Moving on to step 7:
When dividing 125 by 28, we get 4 with a remainder of 13.
Put 4 as the next digit of the answer. 
Result so far: 66994.0
If we take 112 away from 125, we end up with 13.
Grab the next digit (1) from the dividend, add it to 13, then carry on: 131 / 28

Going ahead to step 8:
When dividing 131 by 28, we get 4 with a remainder of 19.
The next digit of our result is 4. 
Result so far: 669944.0
Subtracting 112 from 131 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 9:
If we divide 190 by 28, we get 6 and a remainder of 22.
Put 6 as the next digit of the answer. 
Result so far: 669944.6
Subtract 168 from 190 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 10:
If we divide 220 by 28, we get 7 and a remainder of 24.
Use 7 as the next digit of our solution. 
Result so far: 669944.67
The remainder is 24 after subtracting 196 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 11:
28 can be fit into 240 8 times, resulting in a remainder of 16.
Put 8 as the next digit of the answer. 
Result so far: 669944.678
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.

Let's proceed to step 12:
If we divide 160 by 28, we get 5 and a remainder of 20.
Record the quotient 5 as the next digit in the result. 
Result so far: 669944.6785
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.

Let's proceed to step 13:
28 goes into 200 7 times with a remainder of 4.
Record the quotient 7 as the next digit in the result. 
Result so far: 669944.67857
Deduct 196 from 200 and we're left 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.

Let's proceed to step 14:
40 divided by 28 is 1 with a remainder of 12.
Use 1 as the next digit of our solution. 
Result so far: 669944.678571
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 15:
28 goes into 120 4 times with a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 669944.6785714
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.

On to step 16:
If we divide 80 by 28, we get 2 and a remainder of 24.
The number 2 becomes the next digit in our result. 
Result so far: 669944.67857142
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.

The quotient of the division is 669944.67857142, and the remainder is 2.4e-08.