91821 divided by 9 
We want to divide 91821 by 9.

Step 1:
9 can be fit into 9 1 times, resulting in a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 9 away from 9, we end up with 0.
Take the next digit (1) from the dividend and append it to 0, then repeat: 1 / 9

Step 2:
The number 9 fits into 1 0 times, leaving a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 10.0
The remainder is 1 after subtracting 0 from 1.
Fetch the next digit (8) from the dividend, attach it to 1 and continue: 18 / 9

Going ahead to step 3:
If we divide 18 by 9, we get 2 and a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 102.0
The remainder is 0 after subtracting 18 from 18.
Append the next digit (2) from the dividend to 0 and continue with: 2 / 9

On to step 4:
9 can be fit into 2 0 times, resulting in a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 1020.0
If we take 0 away from 2, we end up with 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 9

Advancing to step 5:
When dividing 21 by 9, we get 2 with a remainder of 3.
Record the quotient 2 as the next digit in the result. 
Result so far: 10202.0
Subtracting 18 from 21 leaves us with 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 6:
9 goes into 30 3 times with a remainder of 3.
Record the quotient 3 as the next digit in the result. 
Result so far: 10202.3
Subtract 27 from 30 to 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.

Moving on to step 7:
9 goes into 30 3 times with a remainder of 3.
Record the quotient 3 as the next digit in the result. 
Result so far: 10202.33
If we take 27 away from 30, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

The final outcome is 10202.33, with a leftover of 0.003.