We're dividing 715542 by 78 
The aim is to understand the frequency of 78 in 715542.

Going ahead to step 1:
78 can be fit into 7 0 times, resulting in a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Append the next digit (1) from the dividend to 7 and continue with: 71 / 78

Advancing to step 2:
71 divided by 78 is 0 with a remainder of 71.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 71 leaves us with 71.
Fetch the next digit (5) from the dividend, attach it to 71 and continue: 715 / 78

On to step 3:
The number 78 fits into 715 9 times, leaving a remainder of 13.
Write down 9 as next digit of the result. 
Result so far: 9.0
If we take 702 away from 715, we end up with 13.
Take the next digit (5) from the dividend and append it to 13, then repeat: 135 / 78

Let's proceed to step 4:
The number 78 fits into 135 1 times, leaving a remainder of 57.
Record the quotient 1 as the next digit in the result. 
Result so far: 91.0
The remainder is 57 after subtracting 78 from 135.
Append the next digit (4) from the dividend to 57 and continue with: 574 / 78

Going ahead to step 5:
When dividing 574 by 78, we get 7 with a remainder of 28.
Write down 7 as next digit of the result. 
Result so far: 917.0
If we take 546 away from 574, we end up with 28.
Include the next digit (2) from the dividend after 28, then repeat: 282 / 78

Step 6:
78 goes into 282 3 times with a remainder of 48.
Record the quotient 3 as the next digit in the result. 
Result so far: 9173.0
Deduct 234 from 282 and we're left 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.

Advancing to step 7:
480 divided by 78 is 6 with a remainder of 12.
Record the quotient 6 as the next digit in the result. 
Result so far: 9173.6
Subtract 468 from 480 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.

Moving on to step 8:
78 can be fit into 120 1 times, resulting in a remainder of 42.
Record the quotient 1 as the next digit in the result. 
Result so far: 9173.61
If we subtract 78 from 120, we get 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 9:
420 divided by 78 is 5 with a remainder of 30.
The next digit of our result is 5. 
Result so far: 9173.615
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.

Let's proceed to step 10:
78 goes into 300 3 times with a remainder of 66.
The next digit of our result is 3. 
Result so far: 9173.6153
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.

Let's proceed to step 11:
660 divided by 78 is 8 with a remainder of 36.
Put 8 as the next digit of the answer. 
Result so far: 9173.61538
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 12:
78 goes into 360 4 times with a remainder of 48.
Write down 4 as next digit of the result. 
Result so far: 9173.615384
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.

Going ahead to step 13:
When dividing 480 by 78, we get 6 with a remainder of 12.
Use 6 as the next digit of our solution. 
Result so far: 9173.6153846
If we subtract 468 from 480, we 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 14:
78 can be fit into 120 1 times, resulting in a remainder of 42.
Write down 1 as next digit of the result. 
Result so far: 9173.61538461
Deduct 78 from 120 and we're left 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.

The final result is 9173.61538461 with a remainder of 4.2e-08.