Let's divide 771858 by 81
We're looking to find how many times 81 goes into 771858.

Let's proceed to step 1:
7 divided by 81 is 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Include the next digit (7) from the dividend after 7, then repeat: 77 / 81

Advancing to step 2:
81 can be fit into 77 0 times, resulting in a remainder of 77.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 77 leaves us with 77.
Append the next digit (1) from the dividend to 77 and continue with: 771 / 81

On to step 3:
When dividing 771 by 81, we get 9 with a remainder of 42.
Put 9 as the next digit of the answer. 
Result so far: 9.0
Subtracting 729 from 771 leaves us with 42.
Fetch the next digit (8) from the dividend, attach it to 42 and continue: 428 / 81

Advancing to step 4:
If we divide 428 by 81, we get 5 and a remainder of 23.
The next digit of our result is 5. 
Result so far: 95.0
If we subtract 405 from 428, we get 23.
Grab the next digit (5) from the dividend, add it to 23, then carry on: 235 / 81

Moving on to step 5:
81 goes into 235 2 times with a remainder of 73.
The next digit of our result is 2. 
Result so far: 952.0
If we subtract 162 from 235, we get 73.
Append the next digit (8) from the dividend to 73 and continue with: 738 / 81

Going ahead to step 6:
When dividing 738 by 81, we get 9 with a remainder of 9.
Use 9 as the next digit of our solution. 
Result so far: 9529.0
Deduct 729 from 738 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 7:
81 goes into 90 1 times with a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 9529.1
If we subtract 81 from 90, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 8:
If we divide 90 by 81, we get 1 and a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 9529.11
Subtracting 81 from 90 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Our division results in 9529.11 with a remaining 0.009.