We're dividing 780569 by 78 
The aim is to understand the frequency of 78 in 780569.

Advancing to step 1:
78 can be fit into 7 0 times, resulting in a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Include the next digit (8) from the dividend after 7, then repeat: 78 / 78

Going ahead to step 2:
When dividing 78 by 78, we get 1 with a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 78 away from 78, we end up with 0.
Fetch the next digit (0) from the dividend, attach it to 0 and continue: 0 / 78

On to step 3:
If we divide 0 by 78, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 10.0
If we take 0 away from 0, we end up with 0.
Grab the next digit (5) from the dividend, add it to 0, then carry on: 5 / 78

Let's proceed to step 4:
78 goes into 5 0 times with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 100.0
Deduct 0 from 5 and we're left with 5.
Take the next digit (6) from the dividend and append it to 5, then repeat: 56 / 78

Step 5:
If we divide 56 by 78, we get 0 and a remainder of 56.
Use 0 as the next digit of our solution. 
Result so far: 1000.0
The remainder is 56 after subtracting 0 from 56.
Fetch the next digit (9) from the dividend, attach it to 56 and continue: 569 / 78

Let's proceed to step 6:
If we divide 569 by 78, we get 7 and a remainder of 23.
Record the quotient 7 as the next digit in the result. 
Result so far: 10007.0
If we subtract 546 from 569, we get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Let's proceed to step 7:
78 goes into 230 2 times with a remainder of 74.
The next digit of our result is 2. 
Result so far: 10007.2
Deduct 156 from 230 and we're left with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Moving on to step 8:
When dividing 740 by 78, we get 9 with a remainder of 38.
Use 9 as the next digit of our solution. 
Result so far: 10007.29
Deduct 702 from 740 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 9:
The number 78 fits into 380 4 times, leaving a remainder of 68.
Write down 4 as next digit of the result. 
Result so far: 10007.294
If we subtract 312 from 380, we get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Moving on to step 10:
78 goes into 680 8 times with a remainder of 56.
The next digit of our result is 8. 
Result so far: 10007.2948
Subtract 624 from 680 to get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 11:
The number 78 fits into 560 7 times, leaving a remainder of 14.
The number 7 becomes the next digit in our result. 
Result so far: 10007.29487
Deduct 546 from 560 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 12:
78 can be fit into 140 1 times, resulting in a remainder of 62.
The next digit of our result is 1. 
Result so far: 10007.294871
Deduct 78 from 140 and we're left with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Moving on to step 13:
620 divided by 78 is 7 with a remainder of 74.
Use 7 as the next digit of our solution. 
Result so far: 10007.2948717
Subtracting 546 from 620 leaves us with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Moving on to step 14:
If we divide 740 by 78, we get 9 and a remainder of 38.
Record the quotient 9 as the next digit in the result. 
Result so far: 10007.29487179
If we subtract 702 from 740, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Our division results in 10007.29487179 with a remaining 3.8e-08.