78686367 divided by 780 
The aim is to understand the frequency of 780 in 78686367.

Moving on to step 1:
The number 780 fits into 7 0 times, leaving a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 780

Let's proceed to step 2:
78 divided by 780 is 0 with a remainder of 78.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 78 after subtracting 0 from 78.
Include the next digit (6) from the dividend after 78, then repeat: 786 / 780

Moving on to step 3:
When dividing 786 by 780, we get 1 with a remainder of 6.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 6 after subtracting 780 from 786.
Fetch the next digit (8) from the dividend, attach it to 6 and continue: 68 / 780

Moving on to step 4:
When dividing 68 by 780, we get 0 with a remainder of 68.
Write down 0 as next digit of the result. 
Result so far: 10.0
The remainder is 68 after subtracting 0 from 68.
Include the next digit (6) from the dividend after 68, then repeat: 686 / 780

Advancing to step 5:
If we divide 686 by 780, we get 0 and a remainder of 686.
Put 0 as the next digit of the answer. 
Result so far: 100.0
Subtracting 0 from 686 leaves us with 686.
Take the next digit (3) from the dividend and append it to 686, then repeat: 6863 / 780

Step 6:
When dividing 6863 by 780, we get 8 with a remainder of 623.
The next digit of our result is 8. 
Result so far: 1008.0
Deduct 6240 from 6863 and we're left with 623.
Grab the next digit (6) from the dividend, add it to 623, then carry on: 6236 / 780

Moving on to step 7:
780 goes into 6236 7 times with a remainder of 776.
The number 7 becomes the next digit in our result. 
Result so far: 10087.0
Subtract 5460 from 6236 to get 776.
Take the next digit (7) from the dividend and append it to 776, then repeat: 7767 / 780

Step 8:
780 can be fit into 7767 9 times, resulting in a remainder of 747.
Record the quotient 9 as the next digit in the result. 
Result so far: 100879.0
Deduct 7020 from 7767 and we're left with 747.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7470, and continue the process.

On to step 9:
The number 780 fits into 7470 9 times, leaving a remainder of 450.
Use 9 as the next digit of our solution. 
Result so far: 100879.9
The remainder is 450 after subtracting 7020 from 7470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

On to step 10:
The number 780 fits into 4500 5 times, leaving a remainder of 600.
The next digit of our result is 5. 
Result so far: 100879.95
If we take 3900 away from 4500, we end up with 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

On to step 11:
6000 divided by 780 is 7 with a remainder of 540.
Use 7 as the next digit of our solution. 
Result so far: 100879.957
The remainder is 540 after subtracting 5460 from 6000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

Let's proceed to step 12:
If we divide 5400 by 780, we get 6 and a remainder of 720.
Record the quotient 6 as the next digit in the result. 
Result so far: 100879.9576
The remainder is 720 after subtracting 4680 from 5400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7200, and continue the process.

On to step 13:
780 goes into 7200 9 times with a remainder of 180.
Put 9 as the next digit of the answer. 
Result so far: 100879.95769
Deduct 7020 from 7200 and we're left with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Moving on to step 14:
The number 780 fits into 1800 2 times, leaving a remainder of 240.
Write down 2 as next digit of the result. 
Result so far: 100879.957692
If we take 1560 away from 1800, we end up with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Going ahead to step 15:
The number 780 fits into 2400 3 times, leaving a remainder of 60.
Use 3 as the next digit of our solution. 
Result so far: 100879.9576923
Subtract 2340 from 2400 to get 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 16:
The number 780 fits into 600 0 times, leaving a remainder of 600.
The number 0 becomes the next digit in our result. 
Result so far: 100879.9576923
Subtracting 0 from 600 leaves us with 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

The final result is 100879.9576923 with a remainder of 6e-07.