4639532 ÷ 321 
The aim is to understand the frequency of 321 in 4639532.

Going ahead to step 1:
321 goes into 4 0 times with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Bring next digit (6) of the dividend behind the 4 and repeat the process: 46 / 321

Let's proceed to step 2:
321 can be fit into 46 0 times, resulting in a remainder of 46.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 46, we get 46.
Take the next digit (3) from the dividend and append it to 46, then repeat: 463 / 321

On to step 3:
If we divide 463 by 321, we get 1 and a remainder of 142.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 321 from 463 to get 142.
Bring next digit (9) of the dividend behind the 142 and repeat the process: 1429 / 321

Going ahead to step 4:
321 goes into 1429 4 times with a remainder of 145.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
If we take 1284 away from 1429, we end up with 145.
Take the next digit (5) from the dividend and append it to 145, then repeat: 1455 / 321

Going ahead to step 5:
When dividing 1455 by 321, we get 4 with a remainder of 171.
Record the quotient 4 as the next digit in the result. 
Result so far: 144.0
Subtracting 1284 from 1455 leaves us with 171.
Bring next digit (3) of the dividend behind the 171 and repeat the process: 1713 / 321

Advancing to step 6:
1713 divided by 321 is 5 with a remainder of 108.
Use 5 as the next digit of our solution. 
Result so far: 1445.0
Subtract 1605 from 1713 to get 108.
Take the next digit (2) from the dividend and append it to 108, then repeat: 1082 / 321

Going ahead to step 7:
321 goes into 1082 3 times with a remainder of 119.
Put 3 as the next digit of the answer. 
Result so far: 14453.0
Subtracting 963 from 1082 leaves us with 119.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1190, and continue the process.

Moving on to step 8:
When dividing 1190 by 321, we get 3 with a remainder of 227.
The next digit of our result is 3. 
Result so far: 14453.3
The remainder is 227 after subtracting 963 from 1190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2270, and continue the process.

Let's proceed to step 9:
When dividing 2270 by 321, we get 7 with a remainder of 23.
Write down 7 as next digit of the result. 
Result so far: 14453.37
The remainder is 23 after subtracting 2247 from 2270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

On to step 10:
321 goes into 230 0 times with a remainder of 230.
The number 0 becomes the next digit in our result. 
Result so far: 14453.37
Deduct 0 from 230 and we're left with 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

On to step 11:
If we divide 2300 by 321, we get 7 and a remainder of 53.
The number 7 becomes the next digit in our result. 
Result so far: 14453.3707
If we subtract 2247 from 2300, we get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Moving on to step 12:
321 goes into 530 1 times with a remainder of 209.
Record the quotient 1 as the next digit in the result. 
Result so far: 14453.37071
The remainder is 209 after subtracting 321 from 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2090, and continue the process.

On to step 13:
2090 divided by 321 is 6 with a remainder of 164.
Write down 6 as next digit of the result. 
Result so far: 14453.370716
Subtracting 1926 from 2090 leaves us with 164.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

Moving on to step 14:
When dividing 1640 by 321, we get 5 with a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 14453.3707165
Deduct 1605 from 1640 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Step 15:
321 can be fit into 350 1 times, resulting in a remainder of 29.
Record the quotient 1 as the next digit in the result. 
Result so far: 14453.37071651
Subtracting 321 from 350 leaves us with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Our division results in 14453.37071651 with a remaining 2.9e-08.