86611871 divided by 786 
The aim is to understand the frequency of 786 in 86611871.

Moving on to step 1:
786 can be fit into 8 0 times, resulting in a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 786

On to step 2:
786 can be fit into 86 0 times, resulting in a remainder of 86.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 86 after subtracting 0 from 86.
Include the next digit (6) from the dividend after 86, then repeat: 866 / 786

Let's proceed to step 3:
786 goes into 866 1 times with a remainder of 80.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 786 from 866 leaves us with 80.
Include the next digit (1) from the dividend after 80, then repeat: 801 / 786

Let's proceed to step 4:
When dividing 801 by 786, we get 1 with a remainder of 15.
The next digit of our result is 1. 
Result so far: 11.0
The remainder is 15 after subtracting 786 from 801.
Bring next digit (1) of the dividend behind the 15 and repeat the process: 151 / 786

Advancing to step 5:
The number 786 fits into 151 0 times, leaving a remainder of 151.
Put 0 as the next digit of the answer. 
Result so far: 110.0
If we subtract 0 from 151, we get 151.
Fetch the next digit (8) from the dividend, attach it to 151 and continue: 1518 / 786

Advancing to step 6:
If we divide 1518 by 786, we get 1 and a remainder of 732.
Use 1 as the next digit of our solution. 
Result so far: 1101.0
If we take 786 away from 1518, we end up with 732.
Grab the next digit (7) from the dividend, add it to 732, then carry on: 7327 / 786

Moving on to step 7:
786 can be fit into 7327 9 times, resulting in a remainder of 253.
The number 9 becomes the next digit in our result. 
Result so far: 11019.0
The remainder is 253 after subtracting 7074 from 7327.
Bring next digit (1) of the dividend behind the 253 and repeat the process: 2531 / 786

Advancing to step 8:
2531 divided by 786 is 3 with a remainder of 173.
The number 3 becomes the next digit in our result. 
Result so far: 110193.0
If we take 2358 away from 2531, we end up with 173.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1730, and continue the process.

On to step 9:
786 can be fit into 1730 2 times, resulting in a remainder of 158.
Record the quotient 2 as the next digit in the result. 
Result so far: 110193.2
Subtracting 1572 from 1730 leaves us with 158.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

Moving on to step 10:
786 can be fit into 1580 2 times, resulting in a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 110193.22
The remainder is 8 after subtracting 1572 from 1580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final result is 110193.22 with a remainder of 0.008.