We look at the division of 579030 by 78 
The aim is to understand the frequency of 78 in 579030.

Going ahead to step 1:
The number 78 fits into 5 0 times, leaving a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Fetch the next digit (7) from the dividend, attach it to 5 and continue: 57 / 78

On to step 2:
57 divided by 78 is 0 with a remainder of 57.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 57 to get 57.
Fetch the next digit (9) from the dividend, attach it to 57 and continue: 579 / 78

Let's proceed to step 3:
78 goes into 579 7 times with a remainder of 33.
Write down 7 as next digit of the result. 
Result so far: 7.0
The remainder is 33 after subtracting 546 from 579.
Bring next digit (0) of the dividend behind the 33 and repeat the process: 330 / 78

Advancing to step 4:
When dividing 330 by 78, we get 4 with a remainder of 18.
Write down 4 as next digit of the result. 
Result so far: 74.0
Subtract 312 from 330 to get 18.
Take the next digit (3) from the dividend and append it to 18, then repeat: 183 / 78

Moving on to step 5:
78 goes into 183 2 times with a remainder of 27.
The next digit of our result is 2. 
Result so far: 742.0
Subtract 156 from 183 to get 27.
Take the next digit (0) from the dividend and append it to 27, then repeat: 270 / 78

Going ahead to step 6:
78 goes into 270 3 times with a remainder of 36.
Use 3 as the next digit of our solution. 
Result so far: 7423.0
If we subtract 234 from 270, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 7:
When dividing 360 by 78, we get 4 with a remainder of 48.
Use 4 as the next digit of our solution. 
Result so far: 7423.4
If we take 312 away from 360, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 8:
The number 78 fits into 480 6 times, leaving a remainder of 12.
Record the quotient 6 as the next digit in the result. 
Result so far: 7423.46
Subtracting 468 from 480 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.

On to step 9:
78 goes into 120 1 times with a remainder of 42.
The next digit of our result is 1. 
Result so far: 7423.461
Subtracting 78 from 120 leaves us with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 10:
The number 78 fits into 420 5 times, leaving a remainder of 30.
Put 5 as the next digit of the answer. 
Result so far: 7423.4615
Subtracting 390 from 420 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 11:
If we divide 300 by 78, we get 3 and a remainder of 66.
Record the quotient 3 as the next digit in the result. 
Result so far: 7423.46153
Subtracting 234 from 300 leaves us with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Moving on to step 12:
The number 78 fits into 660 8 times, leaving a remainder of 36.
Put 8 as the next digit of the answer. 
Result so far: 7423.461538
Subtracting 624 from 660 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 13:
360 divided by 78 is 4 with a remainder of 48.
The next digit of our result is 4. 
Result so far: 7423.4615384
If we take 312 away from 360, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 14:
The number 78 fits into 480 6 times, leaving a remainder of 12.
The next digit of our result is 6. 
Result so far: 7423.46153846
Subtracting 468 from 480 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.

Our division results in 7423.46153846 with a remaining 1.2e-08.