We look at the division of 56355705 by 321 
The aim is to understand the frequency of 321 in 56355705.

Going ahead to step 1:
321 can be fit into 5 0 times, resulting in a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Append the next digit (6) from the dividend to 5 and continue with: 56 / 321

Advancing to step 2:
If we divide 56 by 321, we get 0 and a remainder of 56.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 56 and we're left with 56.
Fetch the next digit (3) from the dividend, attach it to 56 and continue: 563 / 321

Moving on to step 3:
321 can be fit into 563 1 times, resulting in a remainder of 242.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 321 away from 563, we end up with 242.
Grab the next digit (5) from the dividend, add it to 242, then carry on: 2425 / 321

On to step 4:
321 goes into 2425 7 times with a remainder of 178.
Write down 7 as next digit of the result. 
Result so far: 17.0
Subtract 2247 from 2425 to get 178.
Append the next digit (5) from the dividend to 178 and continue with: 1785 / 321

Step 5:
If we divide 1785 by 321, we get 5 and a remainder of 180.
The number 5 becomes the next digit in our result. 
Result so far: 175.0
The remainder is 180 after subtracting 1605 from 1785.
Include the next digit (7) from the dividend after 180, then repeat: 1807 / 321

Moving on to step 6:
If we divide 1807 by 321, we get 5 and a remainder of 202.
Use 5 as the next digit of our solution. 
Result so far: 1755.0
If we subtract 1605 from 1807, we get 202.
Bring next digit (0) of the dividend behind the 202 and repeat the process: 2020 / 321

On to step 7:
When dividing 2020 by 321, we get 6 with a remainder of 94.
Write down 6 as next digit of the result. 
Result so far: 17556.0
The remainder is 94 after subtracting 1926 from 2020.
Bring next digit (5) of the dividend behind the 94 and repeat the process: 945 / 321

Moving on to step 8:
When dividing 945 by 321, we get 2 with a remainder of 303.
The number 2 becomes the next digit in our result. 
Result so far: 175562.0
Deduct 642 from 945 and we're left with 303.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3030, and continue the process.

Step 9:
321 can be fit into 3030 9 times, resulting in a remainder of 141.
Use 9 as the next digit of our solution. 
Result so far: 175562.9
Subtracting 2889 from 3030 leaves us with 141.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1410, and continue the process.

Let's proceed to step 10:
When dividing 1410 by 321, we get 4 with a remainder of 126.
Use 4 as the next digit of our solution. 
Result so far: 175562.94
Subtracting 1284 from 1410 leaves us with 126.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1260, and continue the process.

Let's proceed to step 11:
When dividing 1260 by 321, we get 3 with a remainder of 297.
Record the quotient 3 as the next digit in the result. 
Result so far: 175562.943
Subtracting 963 from 1260 leaves us with 297.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2970, and continue the process.

On to step 12:
When dividing 2970 by 321, we get 9 with a remainder of 81.
Use 9 as the next digit of our solution. 
Result so far: 175562.9439
Deduct 2889 from 2970 and we're left with 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

On to step 13:
When dividing 810 by 321, we get 2 with a remainder of 168.
The next digit of our result is 2. 
Result so far: 175562.94392
If we subtract 642 from 810, we get 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

On to step 14:
The number 321 fits into 1680 5 times, leaving a remainder of 75.
Use 5 as the next digit of our solution. 
Result so far: 175562.943925
If we take 1605 away from 1680, we end up with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Going ahead to step 15:
If we divide 750 by 321, we get 2 and a remainder of 108.
Write down 2 as next digit of the result. 
Result so far: 175562.9439252
If we subtract 642 from 750, we get 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

Let's proceed to step 16:
If we divide 1080 by 321, we get 3 and a remainder of 117.
Write down 3 as next digit of the result. 
Result so far: 175562.94392523
Subtract 963 from 1080 to get 117.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1170, and continue the process.

The final outcome is 175562.94392523, with a leftover of 1.17e-07.