We're dividing 210204 by 99 
We want to figure out the number of times 210204 can be divided by 99.

On to step 1:
If we divide 2 by 99, we get 0 and a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 99

On to step 2:
When dividing 21 by 99, we get 0 with a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Bring next digit (0) of the dividend behind the 21 and repeat the process: 210 / 99

Let's proceed to step 3:
The number 99 fits into 210 2 times, leaving a remainder of 12.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
The remainder is 12 after subtracting 198 from 210.
Fetch the next digit (2) from the dividend, attach it to 12 and continue: 122 / 99

Moving on to step 4:
If we divide 122 by 99, we get 1 and a remainder of 23.
Record the quotient 1 as the next digit in the result. 
Result so far: 21.0
The remainder is 23 after subtracting 99 from 122.
Include the next digit (0) from the dividend after 23, then repeat: 230 / 99

Advancing to step 5:
230 divided by 99 is 2 with a remainder of 32.
Record the quotient 2 as the next digit in the result. 
Result so far: 212.0
Subtract 198 from 230 to get 32.
Bring next digit (4) of the dividend behind the 32 and repeat the process: 324 / 99

On to step 6:
324 divided by 99 is 3 with a remainder of 27.
Write down 3 as next digit of the result. 
Result so far: 2123.0
Deduct 297 from 324 and we're left with 27.
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 7:
The number 99 fits into 270 2 times, leaving a remainder of 72.
The number 2 becomes the next digit in our result. 
Result so far: 2123.2
Deduct 198 from 270 and we're left with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Moving on to step 8:
The number 99 fits into 720 7 times, leaving a remainder of 27.
The number 7 becomes the next digit in our result. 
Result so far: 2123.27
The remainder is 27 after subtracting 693 from 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Going ahead to step 9:
99 can be fit into 270 2 times, resulting in a remainder of 72.
The next digit of our result is 2. 
Result so far: 2123.272
If we take 198 away from 270, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Advancing to step 10:
99 can be fit into 720 7 times, resulting in a remainder of 27.
The number 7 becomes the next digit in our result. 
Result so far: 2123.2727
Subtracting 693 from 720 leaves us with 27.
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 11:
99 can be fit into 270 2 times, resulting in a remainder of 72.
Put 2 as the next digit of the answer. 
Result so far: 2123.27272
Deduct 198 from 270 and we're left with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Let's proceed to step 12:
720 divided by 99 is 7 with a remainder of 27.
Record the quotient 7 as the next digit in the result. 
Result so far: 2123.272727
The remainder is 27 after subtracting 693 from 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Let's proceed to step 13:
If we divide 270 by 99, we get 2 and a remainder of 72.
Use 2 as the next digit of our solution. 
Result so far: 2123.2727272
If we subtract 198 from 270, we get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Moving on to step 14:
99 can be fit into 720 7 times, resulting in a remainder of 27.
Put 7 as the next digit of the answer. 
Result so far: 2123.27272727
If we subtract 693 from 720, we get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

After the division, we end up with 2123.27272727 and a remainder of 2.7e-08.