We look at the division of 87778874 by 28 
The aim is to understand the frequency of 28 in 87778874.

Advancing to step 1:
28 can be fit into 8 0 times, resulting in a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 28

Let's proceed 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
Subtracting 84 from 87 leaves us with 3.
Bring next digit (7) of the dividend behind the 3 and repeat the process: 37 / 28

Advancing to step 3:
37 divided by 28 is 1 with a remainder of 9.
The next digit of our result is 1. 
Result so far: 31.0
Subtract 28 from 37 to get 9.
Bring next digit (7) of the dividend behind the 9 and repeat the process: 97 / 28

Going ahead to step 4:
28 can be fit into 97 3 times, resulting in a remainder of 13.
The number 3 becomes the next digit in our result. 
Result so far: 313.0
Deduct 84 from 97 and we're left with 13.
Fetch the next digit (8) from the dividend, attach it to 13 and continue: 138 / 28

On to step 5:
If we divide 138 by 28, we get 4 and a remainder of 26.
The number 4 becomes the next digit in our result. 
Result so far: 3134.0
Subtract 112 from 138 to get 26.
Take the next digit (8) from the dividend and append it to 26, then repeat: 268 / 28

Let's proceed to step 6:
268 divided by 28 is 9 with a remainder of 16.
Use 9 as the next digit of our solution. 
Result so far: 31349.0
The remainder is 16 after subtracting 252 from 268.
Take the next digit (7) from the dividend and append it to 16, then repeat: 167 / 28

Going ahead to step 7:
When dividing 167 by 28, we get 5 with a remainder of 27.
The next digit of our result is 5. 
Result so far: 313495.0
Deduct 140 from 167 and we're left with 27.
Bring next digit (4) of the dividend behind the 27 and repeat the process: 274 / 28

On to step 8:
The number 28 fits into 274 9 times, leaving a remainder of 22.
The next digit of our result is 9. 
Result so far: 3134959.0
Subtract 252 from 274 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.

Moving on to step 9:
28 can be fit into 220 7 times, resulting in a remainder of 24.
Use 7 as the next digit of our solution. 
Result so far: 3134959.7
If we take 196 away from 220, we end up 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 10:
28 goes into 240 8 times with a remainder of 16.
Use 8 as the next digit of our solution. 
Result so far: 3134959.78
Subtracting 224 from 240 leaves us 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.

Advancing to step 11:
28 goes into 160 5 times with a remainder of 20.
The next digit of our result is 5. 
Result so far: 3134959.785
If we take 140 away from 160, we end up 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.

Moving on to step 12:
The number 28 fits into 200 7 times, leaving a remainder of 4.
Write down 7 as next digit of the result. 
Result so far: 3134959.7857
The remainder is 4 after subtracting 196 from 200.
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 13:
40 divided by 28 is 1 with a remainder of 12.
The next digit of our result is 1. 
Result so far: 3134959.78571
If we take 28 away from 40, we end up 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.

Moving on to step 14:
If we divide 120 by 28, we get 4 and a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 3134959.785714
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 15:
If we divide 80 by 28, we get 2 and a remainder of 24.
Write down 2 as next digit of the result. 
Result so far: 3134959.7857142
Subtract 56 from 80 to 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.

On to step 16:
The number 28 fits into 240 8 times, leaving a remainder of 16.
Write down 8 as next digit of the result. 
Result so far: 3134959.78571428
Deduct 224 from 240 and we're left 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.

The final result is 3134959.78571428 with a remainder of 1.6e-08.