67520 ÷ 78 
The aim is to understand the frequency of 78 in 67520.

Step 1:
If we divide 6 by 78, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Take the next digit (7) from the dividend and append it to 6, then repeat: 67 / 78

Advancing to step 2:
When dividing 67 by 78, we get 0 with a remainder of 67.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 67 and we're left with 67.
Fetch the next digit (5) from the dividend, attach it to 67 and continue: 675 / 78

Going ahead to step 3:
The number 78 fits into 675 8 times, leaving a remainder of 51.
Use 8 as the next digit of our solution. 
Result so far: 8.0
If we take 624 away from 675, we end up with 51.
Grab the next digit (2) from the dividend, add it to 51, then carry on: 512 / 78

Moving on to step 4:
78 can be fit into 512 6 times, resulting in a remainder of 44.
The number 6 becomes the next digit in our result. 
Result so far: 86.0
Subtracting 468 from 512 leaves us with 44.
Include the next digit (0) from the dividend after 44, then repeat: 440 / 78

Moving on to step 5:
The number 78 fits into 440 5 times, leaving a remainder of 50.
Put 5 as the next digit of the answer. 
Result so far: 865.0
Subtract 390 from 440 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 6:
500 divided by 78 is 6 with a remainder of 32.
Use 6 as the next digit of our solution. 
Result so far: 865.6
The remainder is 32 after subtracting 468 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 7:
320 divided by 78 is 4 with a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 865.64
Subtracting 312 from 320 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.

Going ahead to step 8:
If we divide 80 by 78, we get 1 and a remainder of 2.
The number 1 becomes the next digit in our result. 
Result so far: 865.641
Subtracting 78 from 80 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 9:
The number 78 fits into 20 0 times, leaving a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 865.641
If we take 0 away from 20, 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.

On to step 10:
78 can be fit into 200 2 times, resulting in a remainder of 44.
Use 2 as the next digit of our solution. 
Result so far: 865.64102
If we subtract 156 from 200, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

On to step 11:
78 goes into 440 5 times with a remainder of 50.
Write down 5 as next digit of the result. 
Result so far: 865.641025
Subtracting 390 from 440 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 12:
If we divide 500 by 78, we get 6 and a remainder of 32.
Use 6 as the next digit of our solution. 
Result so far: 865.6410256
Deduct 468 from 500 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 13:
When dividing 320 by 78, we get 4 with a remainder of 8.
Put 4 as the next digit of the answer. 
Result so far: 865.64102564
Deduct 312 from 320 and we're left 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.

In conclusion, the division gives 865.64102564 with a balance of 8e-09.