We look at the division of 78125789 by 828 
The aim is to understand the frequency of 828 in 78125789.

Advancing to step 1:
If we divide 7 by 828, we get 0 and a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 828

Advancing to step 2:
If we divide 78 by 828, we get 0 and a remainder of 78.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 78, we get 78.
Grab the next digit (1) from the dividend, add it to 78, then carry on: 781 / 828

Advancing to step 3:
When dividing 781 by 828, we get 0 with a remainder of 781.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 781 to get 781.
Append the next digit (2) from the dividend to 781 and continue with: 7812 / 828

Let's proceed to step 4:
If we divide 7812 by 828, we get 9 and a remainder of 360.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
The remainder is 360 after subtracting 7452 from 7812.
Bring next digit (5) of the dividend behind the 360 and repeat the process: 3605 / 828

Step 5:
828 goes into 3605 4 times with a remainder of 293.
The next digit of our result is 4. 
Result so far: 94.0
Deduct 3312 from 3605 and we're left with 293.
Include the next digit (7) from the dividend after 293, then repeat: 2937 / 828

Step 6:
When dividing 2937 by 828, we get 3 with a remainder of 453.
Write down 3 as next digit of the result. 
Result so far: 943.0
Subtract 2484 from 2937 to get 453.
Include the next digit (8) from the dividend after 453, then repeat: 4538 / 828

Going ahead to step 7:
828 can be fit into 4538 5 times, resulting in a remainder of 398.
Write down 5 as next digit of the result. 
Result so far: 9435.0
Subtracting 4140 from 4538 leaves us with 398.
Append the next digit (9) from the dividend to 398 and continue with: 3989 / 828

Step 8:
The number 828 fits into 3989 4 times, leaving a remainder of 677.
Use 4 as the next digit of our solution. 
Result so far: 94354.0
Subtracting 3312 from 3989 leaves us with 677.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6770, and continue the process.

Advancing to step 9:
If we divide 6770 by 828, we get 8 and a remainder of 146.
Use 8 as the next digit of our solution. 
Result so far: 94354.8
Subtract 6624 from 6770 to get 146.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1460, and continue the process.

Advancing to step 10:
When dividing 1460 by 828, we get 1 with a remainder of 632.
Put 1 as the next digit of the answer. 
Result so far: 94354.81
If we take 828 away from 1460, we end up with 632.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6320, and continue the process.

Going ahead to step 11:
828 goes into 6320 7 times with a remainder of 524.
Write down 7 as next digit of the result. 
Result so far: 94354.817
If we subtract 5796 from 6320, we get 524.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5240, and continue the process.

Going ahead to step 12:
5240 divided by 828 is 6 with a remainder of 272.
The number 6 becomes the next digit in our result. 
Result so far: 94354.8176
If we subtract 4968 from 5240, we get 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Going ahead to step 13:
828 goes into 2720 3 times with a remainder of 236.
The next digit of our result is 3. 
Result so far: 94354.81763
Deduct 2484 from 2720 and we're left with 236.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2360, and continue the process.

Going ahead to step 14:
If we divide 2360 by 828, we get 2 and a remainder of 704.
Put 2 as the next digit of the answer. 
Result so far: 94354.817632
Deduct 1656 from 2360 and we're left with 704.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7040, and continue the process.

Let's proceed to step 15:
828 goes into 7040 8 times with a remainder of 416.
Write down 8 as next digit of the result. 
Result so far: 94354.8176328
If we subtract 6624 from 7040, we get 416.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4160, and continue the process.

Advancing to step 16:
When dividing 4160 by 828, we get 5 with a remainder of 20.
Record the quotient 5 as the next digit in the result. 
Result so far: 94354.81763285
The remainder is 20 after subtracting 4140 from 4160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final outcome is 94354.81763285, with a leftover of 2e-08.