20349311 ÷ 324 
The aim is to understand the frequency of 324 in 20349311.

Step 1:
324 can be fit into 2 0 times, resulting in a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Take the next digit (0) from the dividend and append it to 2, then repeat: 20 / 324

Let's proceed to step 2:
20 divided by 324 is 0 with a remainder of 20.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 20 leaves us with 20.
Take the next digit (3) from the dividend and append it to 20, then repeat: 203 / 324

Going ahead to step 3:
When dividing 203 by 324, we get 0 with a remainder of 203.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 203 to get 203.
Append the next digit (4) from the dividend to 203 and continue with: 2034 / 324

Step 4:
324 goes into 2034 6 times with a remainder of 90.
Use 6 as the next digit of our solution. 
Result so far: 6.0
If we subtract 1944 from 2034, we get 90.
Fetch the next digit (9) from the dividend, attach it to 90 and continue: 909 / 324

On to step 5:
If we divide 909 by 324, we get 2 and a remainder of 261.
Record the quotient 2 as the next digit in the result. 
Result so far: 62.0
If we take 648 away from 909, we end up with 261.
Take the next digit (3) from the dividend and append it to 261, then repeat: 2613 / 324

Let's proceed to step 6:
324 goes into 2613 8 times with a remainder of 21.
Put 8 as the next digit of the answer. 
Result so far: 628.0
The remainder is 21 after subtracting 2592 from 2613.
Include the next digit (1) from the dividend after 21, then repeat: 211 / 324

Step 7:
When dividing 211 by 324, we get 0 with a remainder of 211.
Use 0 as the next digit of our solution. 
Result so far: 6280.0
Deduct 0 from 211 and we're left with 211.
Include the next digit (1) from the dividend after 211, then repeat: 2111 / 324

Going ahead to step 8:
If we divide 2111 by 324, we get 6 and a remainder of 167.
The next digit of our result is 6. 
Result so far: 62806.0
Subtract 1944 from 2111 to get 167.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1670, and continue the process.

Step 9:
324 can be fit into 1670 5 times, resulting in a remainder of 50.
The next digit of our result is 5. 
Result so far: 62806.5
If we subtract 1620 from 1670, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 10:
324 goes into 500 1 times with a remainder of 176.
Record the quotient 1 as the next digit in the result. 
Result so far: 62806.51
If we take 324 away from 500, we end up with 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Advancing to step 11:
If we divide 1760 by 324, we get 5 and a remainder of 140.
Put 5 as the next digit of the answer. 
Result so far: 62806.515
The remainder is 140 after subtracting 1620 from 1760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Moving on to step 12:
324 goes into 1400 4 times with a remainder of 104.
Record the quotient 4 as the next digit in the result. 
Result so far: 62806.5154
Deduct 1296 from 1400 and we're left with 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

Going ahead to step 13:
324 can be fit into 1040 3 times, resulting in a remainder of 68.
Record the quotient 3 as the next digit in the result. 
Result so far: 62806.51543
Deduct 972 from 1040 and we're left with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Let's proceed to step 14:
If we divide 680 by 324, we get 2 and a remainder of 32.
The number 2 becomes the next digit in our result. 
Result so far: 62806.515432
If we take 648 away from 680, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 15:
324 goes into 320 0 times with a remainder of 320.
Use 0 as the next digit of our solution. 
Result so far: 62806.515432
The remainder is 320 after subtracting 0 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Let's proceed to step 16:
If we divide 3200 by 324, we get 9 and a remainder of 284.
The next digit of our result is 9. 
Result so far: 62806.51543209
If we take 2916 away from 3200, we end up with 284.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2840, and continue the process.

The final outcome is 62806.51543209, with a leftover of 2.84e-07.