Let's divide 812561 by 91
We want to figure out the number of times 812561 can be divided by 91.

Advancing to step 1:
8 divided by 91 is 0 with 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.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 91

On to step 2:
If we divide 81 by 91, we get 0 and a remainder of 81.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 81 and we're left with 81.
Grab the next digit (2) from the dividend, add it to 81, then carry on: 812 / 91

Moving on to step 3:
812 divided by 91 is 8 with a remainder of 84.
The next digit of our result is 8. 
Result so far: 8.0
If we subtract 728 from 812, we get 84.
Fetch the next digit (5) from the dividend, attach it to 84 and continue: 845 / 91

On to step 4:
The number 91 fits into 845 9 times, leaving a remainder of 26.
Record the quotient 9 as the next digit in the result. 
Result so far: 89.0
The remainder is 26 after subtracting 819 from 845.
Grab the next digit (6) from the dividend, add it to 26, then carry on: 266 / 91

Moving on to step 5:
266 divided by 91 is 2 with a remainder of 84.
Use 2 as the next digit of our solution. 
Result so far: 892.0
Subtracting 182 from 266 leaves us with 84.
Fetch the next digit (1) from the dividend, attach it to 84 and continue: 841 / 91

On to step 6:
841 divided by 91 is 9 with a remainder of 22.
Use 9 as the next digit of our solution. 
Result so far: 8929.0
Subtract 819 from 841 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 7:
91 goes into 220 2 times with a remainder of 38.
Write down 2 as next digit of the result. 
Result so far: 8929.2
If we subtract 182 from 220, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 8:
The number 91 fits into 380 4 times, leaving a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 8929.24
Subtracting 364 from 380 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 9:
160 divided by 91 is 1 with a remainder of 69.
The number 1 becomes the next digit in our result. 
Result so far: 8929.241
If we take 91 away from 160, we end up with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Moving on to step 10:
91 can be fit into 690 7 times, resulting in a remainder of 53.
Record the quotient 7 as the next digit in the result. 
Result so far: 8929.2417
Subtract 637 from 690 to get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

On to step 11:
The number 91 fits into 530 5 times, leaving a remainder of 75.
Use 5 as the next digit of our solution. 
Result so far: 8929.24175
If we subtract 455 from 530, we get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Advancing to step 12:
The number 91 fits into 750 8 times, leaving a remainder of 22.
Use 8 as the next digit of our solution. 
Result so far: 8929.241758
If we subtract 728 from 750, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 13:
If we divide 220 by 91, we get 2 and a remainder of 38.
Record the quotient 2 as the next digit in the result. 
Result so far: 8929.2417582
Subtracting 182 from 220 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 14:
380 divided by 91 is 4 with a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 8929.24175824
Deduct 364 from 380 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

The final outcome is 8929.24175824, with a leftover of 1.6e-08.