323395 ÷ 21 
We're looking to find how many times 21 goes into 323395.

Going ahead to step 1:
21 goes into 3 0 times with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Bring next digit (2) of the dividend behind the 3 and repeat the process: 32 / 21

On to step 2:
If we divide 32 by 21, we get 1 and a remainder of 11.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 21 from 32, we get 11.
Include the next digit (3) from the dividend after 11, then repeat: 113 / 21

Moving on to step 3:
113 divided by 21 is 5 with a remainder of 8.
Record the quotient 5 as the next digit in the result. 
Result so far: 15.0
The remainder is 8 after subtracting 105 from 113.
Append the next digit (3) from the dividend to 8 and continue with: 83 / 21

Going ahead to step 4:
The number 21 fits into 83 3 times, leaving a remainder of 20.
Record the quotient 3 as the next digit in the result. 
Result so far: 153.0
Subtract 63 from 83 to get 20.
Bring next digit (9) of the dividend behind the 20 and repeat the process: 209 / 21

Going ahead to step 5:
21 goes into 209 9 times with a remainder of 20.
Put 9 as the next digit of the answer. 
Result so far: 1539.0
If we take 189 away from 209, we end up with 20.
Grab the next digit (5) from the dividend, add it to 20, then carry on: 205 / 21

Let's proceed to step 6:
When dividing 205 by 21, we get 9 with a remainder of 16.
Write down 9 as next digit of the result. 
Result so far: 15399.0
Subtracting 189 from 205 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 7:
If we divide 160 by 21, we get 7 and a remainder of 13.
Use 7 as the next digit of our solution. 
Result so far: 15399.7
Deduct 147 from 160 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 8:
When dividing 130 by 21, we get 6 with a remainder of 4.
The next digit of our result is 6. 
Result so far: 15399.76
If we take 126 away from 130, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 9:
21 can be fit into 40 1 times, resulting in a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 15399.761
Deduct 21 from 40 and we're left 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.

Step 10:
When dividing 190 by 21, we get 9 with a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 15399.7619
Subtract 189 from 190 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 11:
21 goes into 10 0 times with a remainder of 10.
The next digit of our result is 0. 
Result so far: 15399.7619
The remainder is 10 after subtracting 0 from 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 12:
21 goes into 100 4 times with a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 15399.761904
The remainder is 16 after subtracting 84 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 13:
When dividing 160 by 21, we get 7 with a remainder of 13.
Use 7 as the next digit of our solution. 
Result so far: 15399.7619047
Deduct 147 from 160 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 14:
21 can be fit into 130 6 times, resulting in a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 15399.76190476
Deduct 126 from 130 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

After the division, we end up with 15399.76190476 and a remainder of 4e-09.