We divide 23541598 by 321
The aim is to understand the frequency of 321 in 23541598.

Let's proceed to step 1:
321 can be fit into 2 0 times, resulting in a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Grab the next digit (3) from the dividend, add it to 2, then carry on: 23 / 321

Step 2:
23 divided by 321 is 0 with a remainder of 23.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 23, we get 23.
Grab the next digit (5) from the dividend, add it to 23, then carry on: 235 / 321

On to step 3:
If we divide 235 by 321, we get 0 and a remainder of 235.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 235 leaves us with 235.
Include the next digit (4) from the dividend after 235, then repeat: 2354 / 321

Step 4:
321 goes into 2354 7 times with a remainder of 107.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we take 2247 away from 2354, we end up with 107.
Take the next digit (1) from the dividend and append it to 107, then repeat: 1071 / 321

Step 5:
321 goes into 1071 3 times with a remainder of 108.
Use 3 as the next digit of our solution. 
Result so far: 73.0
If we subtract 963 from 1071, we get 108.
Append the next digit (5) from the dividend to 108 and continue with: 1085 / 321

Going ahead to step 6:
When dividing 1085 by 321, we get 3 with a remainder of 122.
The number 3 becomes the next digit in our result. 
Result so far: 733.0
Subtract 963 from 1085 to get 122.
Fetch the next digit (9) from the dividend, attach it to 122 and continue: 1229 / 321

Advancing to step 7:
321 can be fit into 1229 3 times, resulting in a remainder of 266.
Use 3 as the next digit of our solution. 
Result so far: 7333.0
If we subtract 963 from 1229, we get 266.
Bring next digit (8) of the dividend behind the 266 and repeat the process: 2668 / 321

On to step 8:
2668 divided by 321 is 8 with a remainder of 100.
Put 8 as the next digit of the answer. 
Result so far: 73338.0
If we subtract 2568 from 2668, we get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Advancing to step 9:
The number 321 fits into 1000 3 times, leaving a remainder of 37.
The number 3 becomes the next digit in our result. 
Result so far: 73338.3
Deduct 963 from 1000 and we're left with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Step 10:
370 divided by 321 is 1 with a remainder of 49.
Write down 1 as next digit of the result. 
Result so far: 73338.31
If we subtract 321 from 370, we get 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Advancing to step 11:
If we divide 490 by 321, we get 1 and a remainder of 169.
Write down 1 as next digit of the result. 
Result so far: 73338.311
If we subtract 321 from 490, we get 169.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1690, and continue the process.

The quotient of the division is 73338.311, and the remainder is 0.0169.