We divide 210023 by 99
We're looking to find how many times 99 goes into 210023.

Moving on to step 1:
99 goes into 2 0 times with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 99

Let's proceed to step 2:
When dividing 21 by 99, we get 0 with a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Grab the next digit (0) from the dividend, add it to 21, then carry on: 210 / 99

Step 3:
If we divide 210 by 99, we get 2 and a remainder of 12.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Deduct 198 from 210 and we're left with 12.
Take the next digit (0) from the dividend and append it to 12, then repeat: 120 / 99

Going ahead to step 4:
99 can be fit into 120 1 times, resulting in a remainder of 21.
The number 1 becomes the next digit in our result. 
Result so far: 21.0
The remainder is 21 after subtracting 99 from 120.
Take the next digit (2) from the dividend and append it to 21, then repeat: 212 / 99

Step 5:
When dividing 212 by 99, we get 2 with a remainder of 14.
Put 2 as the next digit of the answer. 
Result so far: 212.0
Subtract 198 from 212 to get 14.
Include the next digit (3) from the dividend after 14, then repeat: 143 / 99

Let's proceed to step 6:
When dividing 143 by 99, we get 1 with a remainder of 44.
The next digit of our result is 1. 
Result so far: 2121.0
The remainder is 44 after subtracting 99 from 143.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Moving on to step 7:
If we divide 440 by 99, we get 4 and a remainder of 44.
Record the quotient 4 as the next digit in the result. 
Result so far: 2121.4
Deduct 396 from 440 and we're left with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

On to step 8:
99 can be fit into 440 4 times, resulting in a remainder of 44.
The next digit of our result is 4. 
Result so far: 2121.44
The remainder is 44 after subtracting 396 from 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

The final outcome is 2121.44, with a leftover of 0.044.