821989 ÷ 90 
We want to divide 821989 by 90.

On to step 1:
90 goes into 8 0 times with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (2) from the dividend after 8, then repeat: 82 / 90

Step 2:
82 divided by 90 is 0 with a remainder of 82.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 82 after subtracting 0 from 82.
Bring next digit (1) of the dividend behind the 82 and repeat the process: 821 / 90

Step 3:
90 can be fit into 821 9 times, resulting in a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 9.0
If we subtract 810 from 821, we get 11.
Fetch the next digit (9) from the dividend, attach it to 11 and continue: 119 / 90

On to step 4:
If we divide 119 by 90, we get 1 and a remainder of 29.
Record the quotient 1 as the next digit in the result. 
Result so far: 91.0
Deduct 90 from 119 and we're left with 29.
Bring next digit (8) of the dividend behind the 29 and repeat the process: 298 / 90

On to step 5:
The number 90 fits into 298 3 times, leaving a remainder of 28.
Write down 3 as next digit of the result. 
Result so far: 913.0
The remainder is 28 after subtracting 270 from 298.
Grab the next digit (9) from the dividend, add it to 28, then carry on: 289 / 90

On to step 6:
When dividing 289 by 90, we get 3 with a remainder of 19.
The next digit of our result is 3. 
Result so far: 9133.0
Subtracting 270 from 289 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 7:
90 can be fit into 190 2 times, resulting in a remainder of 10.
The number 2 becomes the next digit in our result. 
Result so far: 9133.2
If we take 180 away from 190, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 8:
When dividing 100 by 90, we get 1 with a remainder of 10.
The number 1 becomes the next digit in our result. 
Result so far: 9133.21
If we take 90 away from 100, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 9:
90 can be fit into 100 1 times, resulting in a remainder of 10.
Use 1 as the next digit of our solution. 
Result so far: 9133.211
If we subtract 90 from 100, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Our division results in 9133.211 with a remaining 0.001.