Let's divide 38395808 by 321
The aim is to understand the frequency of 321 in 38395808.

On to step 1:
If we divide 3 by 321, we get 0 and a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Fetch the next digit (8) from the dividend, attach it to 3 and continue: 38 / 321

On to step 2:
321 goes into 38 0 times with a remainder of 38.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 38, we end up with 38.
Bring next digit (3) of the dividend behind the 38 and repeat the process: 383 / 321

Step 3:
If we divide 383 by 321, we get 1 and a remainder of 62.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 321 away from 383, we end up with 62.
Fetch the next digit (9) from the dividend, attach it to 62 and continue: 629 / 321

Moving on to step 4:
The number 321 fits into 629 1 times, leaving a remainder of 308.
The next digit of our result is 1. 
Result so far: 11.0
Subtracting 321 from 629 leaves us with 308.
Take the next digit (5) from the dividend and append it to 308, then repeat: 3085 / 321

Step 5:
The number 321 fits into 3085 9 times, leaving a remainder of 196.
Use 9 as the next digit of our solution. 
Result so far: 119.0
Subtracting 2889 from 3085 leaves us with 196.
Append the next digit (8) from the dividend to 196 and continue with: 1968 / 321

Moving on to step 6:
The number 321 fits into 1968 6 times, leaving a remainder of 42.
Record the quotient 6 as the next digit in the result. 
Result so far: 1196.0
The remainder is 42 after subtracting 1926 from 1968.
Bring next digit (0) of the dividend behind the 42 and repeat the process: 420 / 321

Let's proceed to step 7:
321 goes into 420 1 times with a remainder of 99.
Record the quotient 1 as the next digit in the result. 
Result so far: 11961.0
Deduct 321 from 420 and we're left with 99.
Bring next digit (8) of the dividend behind the 99 and repeat the process: 998 / 321

Going ahead to step 8:
998 divided by 321 is 3 with a remainder of 35.
Put 3 as the next digit of the answer. 
Result so far: 119613.0
If we subtract 963 from 998, we get 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 9:
When dividing 350 by 321, we get 1 with a remainder of 29.
The next digit of our result is 1. 
Result so far: 119613.1
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.

Step 10:
When dividing 290 by 321, we get 0 with a remainder of 290.
Record the quotient 0 as the next digit in the result. 
Result so far: 119613.1
Subtract 0 from 290 to get 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Advancing to step 11:
When dividing 2900 by 321, we get 9 with a remainder of 11.
The next digit of our result is 9. 
Result so far: 119613.109
If we take 2889 away from 2900, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Going ahead to step 12:
321 can be fit into 110 0 times, resulting in a remainder of 110.
The next digit of our result is 0. 
Result so far: 119613.109
If we take 0 away from 110, we end up with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Advancing to step 13:
321 can be fit into 1100 3 times, resulting in a remainder of 137.
Record the quotient 3 as the next digit in the result. 
Result so far: 119613.10903
If we take 963 away from 1100, we end up with 137.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1370, and continue the process.

On to step 14:
1370 divided by 321 is 4 with a remainder of 86.
The number 4 becomes the next digit in our result. 
Result so far: 119613.109034
Subtracting 1284 from 1370 leaves us with 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Advancing to step 15:
The number 321 fits into 860 2 times, leaving a remainder of 218.
Put 2 as the next digit of the answer. 
Result so far: 119613.1090342
Deduct 642 from 860 and we're left with 218.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2180, and continue the process.

Going ahead to step 16:
If we divide 2180 by 321, we get 6 and a remainder of 254.
The number 6 becomes the next digit in our result. 
Result so far: 119613.10903426
The remainder is 254 after subtracting 1926 from 2180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

In conclusion, the division gives 119613.10903426 with a balance of 2.54e-07.