We look at the division of 921645 by 91 
We're looking to find how many times 91 goes into 921645.

Advancing to step 1:
9 divided by 91 is 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Append the next digit (2) from the dividend to 9 and continue with: 92 / 91

Advancing to step 2:
91 can be fit into 92 1 times, resulting in a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 91 from 92 to get 1.
Append the next digit (1) from the dividend to 1 and continue with: 11 / 91

Going ahead to step 3:
When dividing 11 by 91, we get 0 with a remainder of 11.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
If we take 0 away from 11, we end up with 11.
Append the next digit (6) from the dividend to 11 and continue with: 116 / 91

Advancing to step 4:
The number 91 fits into 116 1 times, leaving a remainder of 25.
The number 1 becomes the next digit in our result. 
Result so far: 101.0
The remainder is 25 after subtracting 91 from 116.
Append the next digit (4) from the dividend to 25 and continue with: 254 / 91

Moving on to step 5:
91 goes into 254 2 times with a remainder of 72.
The next digit of our result is 2. 
Result so far: 1012.0
If we take 182 away from 254, we end up with 72.
Take the next digit (5) from the dividend and append it to 72, then repeat: 725 / 91

Step 6:
91 goes into 725 7 times with a remainder of 88.
Use 7 as the next digit of our solution. 
Result so far: 10127.0
If we subtract 637 from 725, we get 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Step 7:
The number 91 fits into 880 9 times, leaving a remainder of 61.
Record the quotient 9 as the next digit in the result. 
Result so far: 10127.9
Subtract 819 from 880 to get 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Advancing to step 8:
When dividing 610 by 91, we get 6 with a remainder of 64.
Put 6 as the next digit of the answer. 
Result so far: 10127.96
Subtracting 546 from 610 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

On to step 9:
91 can be fit into 640 7 times, resulting in a remainder of 3.
Use 7 as the next digit of our solution. 
Result so far: 10127.967
If we subtract 637 from 640, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 10:
When dividing 30 by 91, we get 0 with a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 10127.967
Subtracting 0 from 30 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 11:
91 goes into 300 3 times with a remainder of 27.
The number 3 becomes the next digit in our result. 
Result so far: 10127.96703
The remainder is 27 after subtracting 273 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

On to step 12:
270 divided by 91 is 2 with a remainder of 88.
Put 2 as the next digit of the answer. 
Result so far: 10127.967032
Deduct 182 from 270 and we're left with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

On to step 13:
If we divide 880 by 91, we get 9 and a remainder of 61.
The next digit of our result is 9. 
Result so far: 10127.9670329
If we take 819 away from 880, we end up with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

On to step 14:
91 can be fit into 610 6 times, resulting in a remainder of 64.
Use 6 as the next digit of our solution. 
Result so far: 10127.96703296
Deduct 546 from 610 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

After the division, we end up with 10127.96703296 and a remainder of 6.4e-08.