Let's divide 321912 by 99
We want to figure out the number of times 321912 can be divided by 99.

On to step 1:
When dividing 3 by 99, we get 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Grab the next digit (2) from the dividend, add it to 3, then carry on: 32 / 99

Moving on to step 2:
99 can be fit into 32 0 times, resulting in a remainder of 32.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 32, we end up with 32.
Bring next digit (1) of the dividend behind the 32 and repeat the process: 321 / 99

Advancing to step 3:
99 can be fit into 321 3 times, resulting in a remainder of 24.
Put 3 as the next digit of the answer. 
Result so far: 3.0
The remainder is 24 after subtracting 297 from 321.
Fetch the next digit (9) from the dividend, attach it to 24 and continue: 249 / 99

Going ahead to step 4:
If we divide 249 by 99, we get 2 and a remainder of 51.
Put 2 as the next digit of the answer. 
Result so far: 32.0
If we take 198 away from 249, we end up with 51.
Include the next digit (1) from the dividend after 51, then repeat: 511 / 99

Step 5:
511 divided by 99 is 5 with a remainder of 16.
Put 5 as the next digit of the answer. 
Result so far: 325.0
If we subtract 495 from 511, we get 16.
Append the next digit (2) from the dividend to 16 and continue with: 162 / 99

On to step 6:
The number 99 fits into 162 1 times, leaving a remainder of 63.
Write down 1 as next digit of the result. 
Result so far: 3251.0
Subtract 99 from 162 to get 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Step 7:
The number 99 fits into 630 6 times, leaving a remainder of 36.
Put 6 as the next digit of the answer. 
Result so far: 3251.6
If we subtract 594 from 630, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 8:
99 goes into 360 3 times with a remainder of 63.
Put 3 as the next digit of the answer. 
Result so far: 3251.63
Subtract 297 from 360 to get 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Let's proceed to step 9:
630 divided by 99 is 6 with a remainder of 36.
Write down 6 as next digit of the result. 
Result so far: 3251.636
If we take 594 away from 630, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 10:
360 divided by 99 is 3 with a remainder of 63.
The number 3 becomes the next digit in our result. 
Result so far: 3251.6363
If we subtract 297 from 360, we get 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Step 11:
99 goes into 630 6 times with a remainder of 36.
Use 6 as the next digit of our solution. 
Result so far: 3251.63636
If we take 594 away from 630, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 12:
The number 99 fits into 360 3 times, leaving a remainder of 63.
Put 3 as the next digit of the answer. 
Result so far: 3251.636363
If we take 297 away from 360, we end up with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Advancing to step 13:
99 goes into 630 6 times with a remainder of 36.
Write down 6 as next digit of the result. 
Result so far: 3251.6363636
Subtracting 594 from 630 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 14:
The number 99 fits into 360 3 times, leaving a remainder of 63.
Use 3 as the next digit of our solution. 
Result so far: 3251.63636363
The remainder is 63 after subtracting 297 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

After the division, we end up with 3251.63636363 and a remainder of 6.3e-08.