We look at the division of 766207 by 87 
The aim is to understand the frequency of 87 in 766207.

Advancing to step 1:
87 can be fit into 7 0 times, resulting in a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Fetch the next digit (6) from the dividend, attach it to 7 and continue: 76 / 87

Going ahead to step 2:
87 goes into 76 0 times with a remainder of 76.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 76, we end up with 76.
Append the next digit (6) from the dividend to 76 and continue with: 766 / 87

Advancing to step 3:
766 divided by 87 is 8 with a remainder of 70.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Deduct 696 from 766 and we're left with 70.
Include the next digit (2) from the dividend after 70, then repeat: 702 / 87

On to step 4:
87 goes into 702 8 times with a remainder of 6.
Use 8 as the next digit of our solution. 
Result so far: 88.0
If we take 696 away from 702, we end up with 6.
Bring next digit (0) of the dividend behind the 6 and repeat the process: 60 / 87

Advancing to step 5:
87 can be fit into 60 0 times, resulting in a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 880.0
The remainder is 60 after subtracting 0 from 60.
Bring next digit (7) of the dividend behind the 60 and repeat the process: 607 / 87

Advancing to step 6:
The number 87 fits into 607 6 times, leaving a remainder of 85.
Use 6 as the next digit of our solution. 
Result so far: 8806.0
Subtract 522 from 607 to get 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Let's proceed to step 7:
87 can be fit into 850 9 times, resulting in a remainder of 67.
The next digit of our result is 9. 
Result so far: 8806.9
If we subtract 783 from 850, we get 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

On to step 8:
If we divide 670 by 87, we get 7 and a remainder of 61.
The number 7 becomes the next digit in our result. 
Result so far: 8806.97
If we take 609 away from 670, we end up with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

On to step 9:
610 divided by 87 is 7 with a remainder of 1.
The next digit of our result is 7. 
Result so far: 8806.977
Subtract 609 from 610 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

After the division, we end up with 8806.977 and a remainder of 0.0001.