We're dividing 78818725 by 766 
The aim is to understand the frequency of 766 in 78818725.

Let's proceed to step 1:
If we divide 7 by 766, we get 0 and a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Include the next digit (8) from the dividend after 7, then repeat: 78 / 766

On to step 2:
When dividing 78 by 766, we get 0 with a remainder of 78.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 78, we end up with 78.
Fetch the next digit (8) from the dividend, attach it to 78 and continue: 788 / 766

Moving on to step 3:
766 can be fit into 788 1 times, resulting in a remainder of 22.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 766 from 788 leaves us with 22.
Fetch the next digit (1) from the dividend, attach it to 22 and continue: 221 / 766

Advancing to step 4:
When dividing 221 by 766, we get 0 with a remainder of 221.
The next digit of our result is 0. 
Result so far: 10.0
The remainder is 221 after subtracting 0 from 221.
Bring next digit (8) of the dividend behind the 221 and repeat the process: 2218 / 766

On to step 5:
766 goes into 2218 2 times with a remainder of 686.
Use 2 as the next digit of our solution. 
Result so far: 102.0
The remainder is 686 after subtracting 1532 from 2218.
Fetch the next digit (7) from the dividend, attach it to 686 and continue: 6867 / 766

Moving on to step 6:
766 goes into 6867 8 times with a remainder of 739.
Use 8 as the next digit of our solution. 
Result so far: 1028.0
If we take 6128 away from 6867, we end up with 739.
Include the next digit (2) from the dividend after 739, then repeat: 7392 / 766

Going ahead to step 7:
766 goes into 7392 9 times with a remainder of 498.
Put 9 as the next digit of the answer. 
Result so far: 10289.0
If we take 6894 away from 7392, we end up with 498.
Append the next digit (5) from the dividend to 498 and continue with: 4985 / 766

Step 8:
766 can be fit into 4985 6 times, resulting in a remainder of 389.
The next digit of our result is 6. 
Result so far: 102896.0
Subtract 4596 from 4985 to get 389.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3890, and continue the process.

Let's proceed to step 9:
When dividing 3890 by 766, we get 5 with a remainder of 60.
Write down 5 as next digit of the result. 
Result so far: 102896.5
If we take 3830 away from 3890, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 10:
The number 766 fits into 600 0 times, leaving a remainder of 600.
The number 0 becomes the next digit in our result. 
Result so far: 102896.5
If we subtract 0 from 600, we get 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

Advancing to step 11:
If we divide 6000 by 766, we get 7 and a remainder of 638.
The number 7 becomes the next digit in our result. 
Result so far: 102896.507
Deduct 5362 from 6000 and we're left with 638.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6380, and continue the process.

On to step 12:
6380 divided by 766 is 8 with a remainder of 252.
Write down 8 as next digit of the result. 
Result so far: 102896.5078
If we subtract 6128 from 6380, we get 252.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2520, and continue the process.

Let's proceed to step 13:
The number 766 fits into 2520 3 times, leaving a remainder of 222.
The number 3 becomes the next digit in our result. 
Result so far: 102896.50783
If we take 2298 away from 2520, we end up with 222.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2220, and continue the process.

On to step 14:
The number 766 fits into 2220 2 times, leaving a remainder of 688.
The next digit of our result is 2. 
Result so far: 102896.507832
Subtracting 1532 from 2220 leaves us with 688.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6880, and continue the process.

Moving on to step 15:
766 goes into 6880 8 times with a remainder of 752.
The number 8 becomes the next digit in our result. 
Result so far: 102896.5078328
If we take 6128 away from 6880, we end up with 752.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7520, and continue the process.

Moving on to step 16:
766 can be fit into 7520 9 times, resulting in a remainder of 626.
Put 9 as the next digit of the answer. 
Result so far: 102896.50783289
Subtracting 6894 from 7520 leaves us with 626.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6260, and continue the process.

The final outcome is 102896.50783289, with a leftover of 6.26e-07.