Let's divide 21639894 by 324
We want to divide 21639894 by 324.

Advancing to step 1:
If we divide 2 by 324, we get 0 and a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 324

On to step 2:
324 can be fit into 21 0 times, resulting in a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Take the next digit (6) from the dividend and append it to 21, then repeat: 216 / 324

Going ahead to step 3:
216 divided by 324 is 0 with a remainder of 216.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 216 after subtracting 0 from 216.
Include the next digit (3) from the dividend after 216, then repeat: 2163 / 324

On to step 4:
If we divide 2163 by 324, we get 6 and a remainder of 219.
Write down 6 as next digit of the result. 
Result so far: 6.0
Subtract 1944 from 2163 to get 219.
Append the next digit (9) from the dividend to 219 and continue with: 2199 / 324

Step 5:
When dividing 2199 by 324, we get 6 with a remainder of 255.
Put 6 as the next digit of the answer. 
Result so far: 66.0
The remainder is 255 after subtracting 1944 from 2199.
Include the next digit (8) from the dividend after 255, then repeat: 2558 / 324

Let's proceed to step 6:
2558 divided by 324 is 7 with a remainder of 290.
Write down 7 as next digit of the result. 
Result so far: 667.0
If we take 2268 away from 2558, we end up with 290.
Include the next digit (9) from the dividend after 290, then repeat: 2909 / 324

Advancing to step 7:
324 can be fit into 2909 8 times, resulting in a remainder of 317.
Use 8 as the next digit of our solution. 
Result so far: 6678.0
Subtracting 2592 from 2909 leaves us with 317.
Grab the next digit (4) from the dividend, add it to 317, then carry on: 3174 / 324

Step 8:
When dividing 3174 by 324, we get 9 with a remainder of 258.
Use 9 as the next digit of our solution. 
Result so far: 66789.0
Deduct 2916 from 3174 and we're left with 258.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2580, and continue the process.

Advancing to step 9:
324 goes into 2580 7 times with a remainder of 312.
The number 7 becomes the next digit in our result. 
Result so far: 66789.7
The remainder is 312 after subtracting 2268 from 2580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3120, and continue the process.

On to step 10:
When dividing 3120 by 324, we get 9 with a remainder of 204.
Record the quotient 9 as the next digit in the result. 
Result so far: 66789.79
The remainder is 204 after subtracting 2916 from 3120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

Moving on to step 11:
2040 divided by 324 is 6 with a remainder of 96.
The number 6 becomes the next digit in our result. 
Result so far: 66789.796
The remainder is 96 after subtracting 1944 from 2040.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Let's proceed to step 12:
When dividing 960 by 324, we get 2 with a remainder of 312.
The number 2 becomes the next digit in our result. 
Result so far: 66789.7962
If we subtract 648 from 960, we get 312.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3120, and continue the process.

Let's proceed to step 13:
324 can be fit into 3120 9 times, resulting in a remainder of 204.
Record the quotient 9 as the next digit in the result. 
Result so far: 66789.79629
If we take 2916 away from 3120, we end up with 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

Advancing to step 14:
If we divide 2040 by 324, we get 6 and a remainder of 96.
Put 6 as the next digit of the answer. 
Result so far: 66789.796296
If we subtract 1944 from 2040, we get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Step 15:
960 divided by 324 is 2 with a remainder of 312.
Put 2 as the next digit of the answer. 
Result so far: 66789.7962962
The remainder is 312 after subtracting 648 from 960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3120, and continue the process.

Step 16:
324 goes into 3120 9 times with a remainder of 204.
Write down 9 as next digit of the result. 
Result so far: 66789.79629629
Subtract 2916 from 3120 to get 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

Our division results in 66789.79629629 with a remaining 2.04e-07.