815749 ÷ 91 
Our goal is to divide 815749 by 91.

Let's proceed to step 1:
If we divide 8 by 91, we get 0 and a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 91

On to step 2:
91 goes into 81 0 times with a remainder of 81.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 81, we end up with 81.
Grab the next digit (5) from the dividend, add it to 81, then carry on: 815 / 91

On to step 3:
The number 91 fits into 815 8 times, leaving a remainder of 87.
Put 8 as the next digit of the answer. 
Result so far: 8.0
If we take 728 away from 815, we end up with 87.
Grab the next digit (7) from the dividend, add it to 87, then carry on: 877 / 91

On to step 4:
If we divide 877 by 91, we get 9 and a remainder of 58.
Write down 9 as next digit of the result. 
Result so far: 89.0
Subtracting 819 from 877 leaves us with 58.
Bring next digit (4) of the dividend behind the 58 and repeat the process: 584 / 91

Step 5:
If we divide 584 by 91, we get 6 and a remainder of 38.
Write down 6 as next digit of the result. 
Result so far: 896.0
Subtracting 546 from 584 leaves us with 38.
Take the next digit (9) from the dividend and append it to 38, then repeat: 389 / 91

Moving on to step 6:
389 divided by 91 is 4 with a remainder of 25.
Record the quotient 4 as the next digit in the result. 
Result so far: 8964.0
If we take 364 away from 389, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 7:
The number 91 fits into 250 2 times, leaving a remainder of 68.
Record the quotient 2 as the next digit in the result. 
Result so far: 8964.2
Deduct 182 from 250 and we're left with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Let's proceed to step 8:
680 divided by 91 is 7 with a remainder of 43.
Put 7 as the next digit of the answer. 
Result so far: 8964.27
Subtracting 637 from 680 leaves us with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Let's proceed to step 9:
91 goes into 430 4 times with a remainder of 66.
Write down 4 as next digit of the result. 
Result so far: 8964.274
Subtracting 364 from 430 leaves us with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Going ahead to step 10:
If we divide 660 by 91, we get 7 and a remainder of 23.
The next digit of our result is 7. 
Result so far: 8964.2747
If we take 637 away from 660, we end up with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Moving on to step 11:
91 goes into 230 2 times with a remainder of 48.
Use 2 as the next digit of our solution. 
Result so far: 8964.27472
Subtracting 182 from 230 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 12:
91 can be fit into 480 5 times, resulting in a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 8964.274725
Subtracting 455 from 480 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 13:
The number 91 fits into 250 2 times, leaving a remainder of 68.
Put 2 as the next digit of the answer. 
Result so far: 8964.2747252
If we take 182 away from 250, we end up with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Moving on to step 14:
91 can be fit into 680 7 times, resulting in a remainder of 43.
Write down 7 as next digit of the result. 
Result so far: 8964.27472527
If we take 637 away from 680, we end up with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Our division results in 8964.27472527 with a remaining 4.3e-08.