We're dividing 8641015 by 779 
The aim is to understand the frequency of 779 in 8641015.

Let's proceed to step 1:
When dividing 8 by 779, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 779

Advancing to step 2:
779 can be fit into 86 0 times, resulting in a remainder of 86.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 86, we end up with 86.
Take the next digit (4) from the dividend and append it to 86, then repeat: 864 / 779

Going ahead to step 3:
864 divided by 779 is 1 with a remainder of 85.
The next digit of our result is 1. 
Result so far: 1.0
If we take 779 away from 864, we end up with 85.
Bring next digit (1) of the dividend behind the 85 and repeat the process: 851 / 779

Step 4:
851 divided by 779 is 1 with a remainder of 72.
Use 1 as the next digit of our solution. 
Result so far: 11.0
If we subtract 779 from 851, we get 72.
Append the next digit (0) from the dividend to 72 and continue with: 720 / 779

Advancing to step 5:
If we divide 720 by 779, we get 0 and a remainder of 720.
The number 0 becomes the next digit in our result. 
Result so far: 110.0
Deduct 0 from 720 and we're left with 720.
Bring next digit (1) of the dividend behind the 720 and repeat the process: 7201 / 779

Advancing to step 6:
779 can be fit into 7201 9 times, resulting in a remainder of 190.
The number 9 becomes the next digit in our result. 
Result so far: 1109.0
If we take 7011 away from 7201, we end up with 190.
Fetch the next digit (5) from the dividend, attach it to 190 and continue: 1905 / 779

Step 7:
779 can be fit into 1905 2 times, resulting in a remainder of 347.
Write down 2 as next digit of the result. 
Result so far: 11092.0
The remainder is 347 after subtracting 1558 from 1905.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3470, and continue the process.

On to step 8:
The number 779 fits into 3470 4 times, leaving a remainder of 354.
Write down 4 as next digit of the result. 
Result so far: 11092.4
The remainder is 354 after subtracting 3116 from 3470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3540, and continue the process.

Moving on to step 9:
The number 779 fits into 3540 4 times, leaving a remainder of 424.
The number 4 becomes the next digit in our result. 
Result so far: 11092.44
If we subtract 3116 from 3540, we get 424.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4240, and continue the process.

The quotient of the division is 11092.44, and the remainder is 0.424.