We look at the division of 578229 by 78 
The aim is to understand the frequency of 78 in 578229.

Step 1:
5 divided by 78 is 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Bring next digit (7) of the dividend behind the 5 and repeat the process: 57 / 78

On to step 2:
The number 78 fits into 57 0 times, leaving a remainder of 57.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 57 after subtracting 0 from 57.
Grab the next digit (8) from the dividend, add it to 57, then carry on: 578 / 78

Going ahead to step 3:
78 can be fit into 578 7 times, resulting in a remainder of 32.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Subtracting 546 from 578 leaves us with 32.
Take the next digit (2) from the dividend and append it to 32, then repeat: 322 / 78

Advancing to step 4:
322 divided by 78 is 4 with a remainder of 10.
Use 4 as the next digit of our solution. 
Result so far: 74.0
Deduct 312 from 322 and we're left with 10.
Append the next digit (2) from the dividend to 10 and continue with: 102 / 78

Let's proceed to step 5:
102 divided by 78 is 1 with a remainder of 24.
Write down 1 as next digit of the result. 
Result so far: 741.0
Subtract 78 from 102 to get 24.
Fetch the next digit (9) from the dividend, attach it to 24 and continue: 249 / 78

Moving on to step 6:
The number 78 fits into 249 3 times, leaving a remainder of 15.
Write down 3 as next digit of the result. 
Result so far: 7413.0
Deduct 234 from 249 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 7:
The number 78 fits into 150 1 times, leaving a remainder of 72.
Use 1 as the next digit of our solution. 
Result so far: 7413.1
Deduct 78 from 150 and we're left with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Going ahead to step 8:
720 divided by 78 is 9 with a remainder of 18.
The next digit of our result is 9. 
Result so far: 7413.19
If we take 702 away from 720, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 9:
The number 78 fits into 180 2 times, leaving a remainder of 24.
The next digit of our result is 2. 
Result so far: 7413.192
If we subtract 156 from 180, 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.

On to step 10:
240 divided by 78 is 3 with a remainder of 6.
Record the quotient 3 as the next digit in the result. 
Result so far: 7413.1923
Subtracting 234 from 240 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 11:
78 goes into 60 0 times with a remainder of 60.
The next digit of our result is 0. 
Result so far: 7413.1923
Subtracting 0 from 60 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 12:
78 goes into 600 7 times with a remainder of 54.
Write down 7 as next digit of the result. 
Result so far: 7413.192307
If we subtract 546 from 600, we get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Going ahead to step 13:
78 can be fit into 540 6 times, resulting in a remainder of 72.
Put 6 as the next digit of the answer. 
Result so far: 7413.1923076
If we subtract 468 from 540, we get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

On to step 14:
78 can be fit into 720 9 times, resulting in a remainder of 18.
The next digit of our result is 9. 
Result so far: 7413.19230769
Subtract 702 from 720 to 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.

In conclusion, the division gives 7413.19230769 with a balance of 1.8e-08.