We divide 64806524 by 321
The aim is to understand the frequency of 321 in 64806524.

Moving on to step 1:
321 goes into 6 0 times with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 321

Advancing to step 2:
If we divide 64 by 321, we get 0 and a remainder of 64.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 64, we end up with 64.
Take the next digit (8) from the dividend and append it to 64, then repeat: 648 / 321

Moving on to step 3:
321 can be fit into 648 2 times, resulting in a remainder of 6.
The next digit of our result is 2. 
Result so far: 2.0
The remainder is 6 after subtracting 642 from 648.
Grab the next digit (0) from the dividend, add it to 6, then carry on: 60 / 321

Let's proceed to step 4:
321 goes into 60 0 times with a remainder of 60.
Record the quotient 0 as the next digit in the result. 
Result so far: 20.0
Subtract 0 from 60 to get 60.
Append the next digit (6) from the dividend to 60 and continue with: 606 / 321

Moving on to step 5:
606 divided by 321 is 1 with a remainder of 285.
Put 1 as the next digit of the answer. 
Result so far: 201.0
The remainder is 285 after subtracting 321 from 606.
Include the next digit (5) from the dividend after 285, then repeat: 2855 / 321

On to step 6:
The number 321 fits into 2855 8 times, leaving a remainder of 287.
Put 8 as the next digit of the answer. 
Result so far: 2018.0
Deduct 2568 from 2855 and we're left with 287.
Include the next digit (2) from the dividend after 287, then repeat: 2872 / 321

Moving on to step 7:
321 goes into 2872 8 times with a remainder of 304.
Use 8 as the next digit of our solution. 
Result so far: 20188.0
If we take 2568 away from 2872, we end up with 304.
Take the next digit (4) from the dividend and append it to 304, then repeat: 3044 / 321

Let's proceed to step 8:
The number 321 fits into 3044 9 times, leaving a remainder of 155.
Use 9 as the next digit of our solution. 
Result so far: 201889.0
Subtracting 2889 from 3044 leaves us with 155.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1550, and continue the process.

Going ahead to step 9:
If we divide 1550 by 321, we get 4 and a remainder of 266.
The next digit of our result is 4. 
Result so far: 201889.4
Subtract 1284 from 1550 to get 266.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2660, and continue the process.

On to step 10:
When dividing 2660 by 321, we get 8 with a remainder of 92.
The next digit of our result is 8. 
Result so far: 201889.48
If we subtract 2568 from 2660, we get 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Step 11:
321 goes into 920 2 times with a remainder of 278.
Record the quotient 2 as the next digit in the result. 
Result so far: 201889.482
Subtract 642 from 920 to get 278.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2780, and continue the process.

Moving on to step 12:
321 goes into 2780 8 times with a remainder of 212.
Record the quotient 8 as the next digit in the result. 
Result so far: 201889.4828
Subtract 2568 from 2780 to get 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

On to step 13:
321 can be fit into 2120 6 times, resulting in a remainder of 194.
The next digit of our result is 6. 
Result so far: 201889.48286
If we subtract 1926 from 2120, we get 194.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1940, and continue the process.

Step 14:
If we divide 1940 by 321, we get 6 and a remainder of 14.
Use 6 as the next digit of our solution. 
Result so far: 201889.482866
If we take 1926 away from 1940, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

The final outcome is 201889.482866, with a leftover of 1.4e-06.