We divide 54511343 by 321
The aim is to understand the frequency of 321 in 54511343.

Moving on to step 1:
When dividing 5 by 321, we get 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Fetch the next digit (4) from the dividend, attach it to 5 and continue: 54 / 321

Step 2:
54 divided by 321 is 0 with a remainder of 54.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 54, we get 54.
Include the next digit (5) from the dividend after 54, then repeat: 545 / 321

Step 3:
545 divided by 321 is 1 with a remainder of 224.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 321 from 545 to get 224.
Fetch the next digit (1) from the dividend, attach it to 224 and continue: 2241 / 321

Advancing to step 4:
The number 321 fits into 2241 6 times, leaving a remainder of 315.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
Subtracting 1926 from 2241 leaves us with 315.
Include the next digit (1) from the dividend after 315, then repeat: 3151 / 321

Moving on to step 5:
The number 321 fits into 3151 9 times, leaving a remainder of 262.
Write down 9 as next digit of the result. 
Result so far: 169.0
Deduct 2889 from 3151 and we're left with 262.
Take the next digit (3) from the dividend and append it to 262, then repeat: 2623 / 321

Going ahead to step 6:
321 can be fit into 2623 8 times, resulting in a remainder of 55.
The number 8 becomes the next digit in our result. 
Result so far: 1698.0
If we subtract 2568 from 2623, we get 55.
Take the next digit (4) from the dividend and append it to 55, then repeat: 554 / 321

On to step 7:
If we divide 554 by 321, we get 1 and a remainder of 233.
Put 1 as the next digit of the answer. 
Result so far: 16981.0
Deduct 321 from 554 and we're left with 233.
Include the next digit (3) from the dividend after 233, then repeat: 2333 / 321

Step 8:
If we divide 2333 by 321, we get 7 and a remainder of 86.
Record the quotient 7 as the next digit in the result. 
Result so far: 169817.0
If we take 2247 away from 2333, we end up 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.

Going ahead to step 9:
If we divide 860 by 321, we get 2 and a remainder of 218.
The number 2 becomes the next digit in our result. 
Result so far: 169817.2
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 10:
321 goes into 2180 6 times with a remainder of 254.
Record the quotient 6 as the next digit in the result. 
Result so far: 169817.26
Subtracting 1926 from 2180 leaves us with 254.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

Moving on to step 11:
If we divide 2540 by 321, we get 7 and a remainder of 293.
The number 7 becomes the next digit in our result. 
Result so far: 169817.267
If we subtract 2247 from 2540, we get 293.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2930, and continue the process.

On to step 12:
When dividing 2930 by 321, we get 9 with a remainder of 41.
Put 9 as the next digit of the answer. 
Result so far: 169817.2679
The remainder is 41 after subtracting 2889 from 2930.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

On to step 13:
If we divide 410 by 321, we get 1 and a remainder of 89.
Use 1 as the next digit of our solution. 
Result so far: 169817.26791
Subtracting 321 from 410 leaves us with 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

Step 14:
When dividing 890 by 321, we get 2 with a remainder of 248.
Put 2 as the next digit of the answer. 
Result so far: 169817.267912
If we subtract 642 from 890, we get 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Going ahead to step 15:
If we divide 2480 by 321, we get 7 and a remainder of 233.
Write down 7 as next digit of the result. 
Result so far: 169817.2679127
The remainder is 233 after subtracting 2247 from 2480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2330, and continue the process.

Moving on to step 16:
321 goes into 2330 7 times with a remainder of 83.
The next digit of our result is 7. 
Result so far: 169817.26791277
The remainder is 83 after subtracting 2247 from 2330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

After the division, we end up with 169817.26791277 and a remainder of 8.3e-08.