30816828 ÷ 321 
The aim is to understand the frequency of 321 in 30816828.

On to step 1:
321 goes into 3 0 times with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Bring next digit (0) of the dividend behind the 3 and repeat the process: 30 / 321

Let's proceed to step 2:
If we divide 30 by 321, we get 0 and a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 30 leaves us with 30.
Grab the next digit (8) from the dividend, add it to 30, then carry on: 308 / 321

Let's proceed to step 3:
If we divide 308 by 321, we get 0 and a remainder of 308.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 308 after subtracting 0 from 308.
Grab the next digit (1) from the dividend, add it to 308, then carry on: 3081 / 321

Advancing to step 4:
321 goes into 3081 9 times with a remainder of 192.
Write down 9 as next digit of the result. 
Result so far: 9.0
If we take 2889 away from 3081, we end up with 192.
Fetch the next digit (6) from the dividend, attach it to 192 and continue: 1926 / 321

On to step 5:
321 goes into 1926 6 times with a remainder of 0.
Put 6 as the next digit of the answer. 
Result so far: 96.0
Deduct 1926 from 1926 and we're left with 0.
Include the next digit (8) from the dividend after 0, then repeat: 8 / 321

Moving on to step 6:
321 goes into 8 0 times with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 960.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (2) from the dividend after 8, then repeat: 82 / 321

On to step 7:
The number 321 fits into 82 0 times, leaving a remainder of 82.
Record the quotient 0 as the next digit in the result. 
Result so far: 9600.0
Subtracting 0 from 82 leaves us with 82.
Grab the next digit (8) from the dividend, add it to 82, then carry on: 828 / 321

Going ahead to step 8:
The number 321 fits into 828 2 times, leaving a remainder of 186.
Put 2 as the next digit of the answer. 
Result so far: 96002.0
The remainder is 186 after subtracting 642 from 828.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1860, and continue the process.

Step 9:
When dividing 1860 by 321, we get 5 with a remainder of 255.
Put 5 as the next digit of the answer. 
Result so far: 96002.5
Subtracting 1605 from 1860 leaves us with 255.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2550, and continue the process.

On to step 10:
2550 divided by 321 is 7 with a remainder of 303.
The next digit of our result is 7. 
Result so far: 96002.57
If we subtract 2247 from 2550, we get 303.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3030, and continue the process.

Let's proceed to step 11:
If we divide 3030 by 321, we get 9 and a remainder of 141.
Put 9 as the next digit of the answer. 
Result so far: 96002.579
If we take 2889 away from 3030, we end up with 141.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1410, and continue the process.

Let's proceed to step 12:
If we divide 1410 by 321, we get 4 and a remainder of 126.
The number 4 becomes the next digit in our result. 
Result so far: 96002.5794
Deduct 1284 from 1410 and we're left with 126.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1260, and continue the process.

Let's proceed to step 13:
When dividing 1260 by 321, we get 3 with a remainder of 297.
Write down 3 as next digit of the result. 
Result so far: 96002.57943
Deduct 963 from 1260 and we're left with 297.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2970, and continue the process.

Let's proceed to step 14:
If we divide 2970 by 321, we get 9 and a remainder of 81.
Put 9 as the next digit of the answer. 
Result so far: 96002.579439
If we subtract 2889 from 2970, we get 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Going ahead to step 15:
321 goes into 810 2 times with a remainder of 168.
Write down 2 as next digit of the result. 
Result so far: 96002.5794392
Subtracting 642 from 810 leaves us with 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Let's proceed to step 16:
321 can be fit into 1680 5 times, resulting in a remainder of 75.
Record the quotient 5 as the next digit in the result. 
Result so far: 96002.57943925
Deduct 1605 from 1680 and we're left with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

The quotient of the division is 96002.57943925, and the remainder is 7.5e-08.