We divide 66927337 by 321
The aim is to understand the frequency of 321 in 66927337.

Let's proceed to step 1:
When dividing 6 by 321, we get 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 321

Going ahead to step 2:
When dividing 66 by 321, we get 0 with a remainder of 66.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 66 leaves us with 66.
Grab the next digit (9) from the dividend, add it to 66, then carry on: 669 / 321

Moving on to step 3:
669 divided by 321 is 2 with a remainder of 27.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we take 642 away from 669, we end up with 27.
Bring next digit (2) of the dividend behind the 27 and repeat the process: 272 / 321

Advancing to step 4:
321 can be fit into 272 0 times, resulting in a remainder of 272.
Record the quotient 0 as the next digit in the result. 
Result so far: 20.0
If we subtract 0 from 272, we get 272.
Append the next digit (7) from the dividend to 272 and continue with: 2727 / 321

Step 5:
321 can be fit into 2727 8 times, resulting in a remainder of 159.
Write down 8 as next digit of the result. 
Result so far: 208.0
The remainder is 159 after subtracting 2568 from 2727.
Fetch the next digit (3) from the dividend, attach it to 159 and continue: 1593 / 321

Step 6:
The number 321 fits into 1593 4 times, leaving a remainder of 309.
The number 4 becomes the next digit in our result. 
Result so far: 2084.0
The remainder is 309 after subtracting 1284 from 1593.
Fetch the next digit (3) from the dividend, attach it to 309 and continue: 3093 / 321

Going ahead to step 7:
321 goes into 3093 9 times with a remainder of 204.
Put 9 as the next digit of the answer. 
Result so far: 20849.0
If we subtract 2889 from 3093, we get 204.
Include the next digit (7) from the dividend after 204, then repeat: 2047 / 321

Going ahead to step 8:
The number 321 fits into 2047 6 times, leaving a remainder of 121.
The number 6 becomes the next digit in our result. 
Result so far: 208496.0
The remainder is 121 after subtracting 1926 from 2047.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1210, and continue the process.

Let's proceed to step 9:
If we divide 1210 by 321, we get 3 and a remainder of 247.
Write down 3 as next digit of the result. 
Result so far: 208496.3
If we subtract 963 from 1210, we get 247.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2470, and continue the process.

Let's proceed to step 10:
If we divide 2470 by 321, we get 7 and a remainder of 223.
The number 7 becomes the next digit in our result. 
Result so far: 208496.37
Subtract 2247 from 2470 to get 223.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2230, and continue the process.

Let's proceed to step 11:
321 goes into 2230 6 times with a remainder of 304.
The number 6 becomes the next digit in our result. 
Result so far: 208496.376
Deduct 1926 from 2230 and we're left with 304.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3040, and continue the process.

On to step 12:
321 can be fit into 3040 9 times, resulting in a remainder of 151.
Record the quotient 9 as the next digit in the result. 
Result so far: 208496.3769
Deduct 2889 from 3040 and we're left with 151.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1510, and continue the process.

Going ahead to step 13:
1510 divided by 321 is 4 with a remainder of 226.
Write down 4 as next digit of the result. 
Result so far: 208496.37694
Subtract 1284 from 1510 to get 226.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

Step 14:
321 can be fit into 2260 7 times, resulting in a remainder of 13.
Write down 7 as next digit of the result. 
Result so far: 208496.376947
The remainder is 13 after subtracting 2247 from 2260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 15:
321 goes into 130 0 times with a remainder of 130.
Record the quotient 0 as the next digit in the result. 
Result so far: 208496.376947
If we take 0 away from 130, we end up with 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Going ahead to step 16:
When dividing 1300 by 321, we get 4 with a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 208496.37694704
Subtracting 1284 from 1300 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

After the division, we end up with 208496.37694704 and a remainder of 1.6e-08.