We look at the division of 779571 by 86 
We want to figure out the number of times 779571 can be divided by 86.

On to step 1:
7 divided by 86 is 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Fetch the next digit (7) from the dividend, attach it to 7 and continue: 77 / 86

Advancing to step 2:
The number 86 fits into 77 0 times, leaving a remainder of 77.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 77, we end up with 77.
Grab the next digit (9) from the dividend, add it to 77, then carry on: 779 / 86

Step 3:
If we divide 779 by 86, we get 9 and a remainder of 5.
Use 9 as the next digit of our solution. 
Result so far: 9.0
Subtracting 774 from 779 leaves us with 5.
Take the next digit (5) from the dividend and append it to 5, then repeat: 55 / 86

Step 4:
If we divide 55 by 86, we get 0 and a remainder of 55.
The next digit of our result is 0. 
Result so far: 90.0
Deduct 0 from 55 and we're left with 55.
Grab the next digit (7) from the dividend, add it to 55, then carry on: 557 / 86

Advancing to step 5:
86 can be fit into 557 6 times, resulting in a remainder of 41.
Record the quotient 6 as the next digit in the result. 
Result so far: 906.0
The remainder is 41 after subtracting 516 from 557.
Fetch the next digit (1) from the dividend, attach it to 41 and continue: 411 / 86

Going ahead to step 6:
The number 86 fits into 411 4 times, leaving a remainder of 67.
The next digit of our result is 4. 
Result so far: 9064.0
If we take 344 away from 411, we end up with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Going ahead to step 7:
670 divided by 86 is 7 with a remainder of 68.
Write down 7 as next digit of the result. 
Result so far: 9064.7
If we subtract 602 from 670, 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.

Advancing to step 8:
If we divide 680 by 86, we get 7 and a remainder of 78.
Write down 7 as next digit of the result. 
Result so far: 9064.77
If we take 602 away from 680, we end up with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

The quotient of the division is 9064.77, and the remainder is 0.078.