We look at the division of 18280961 by 574 
The aim is to understand the frequency of 574 in 18280961.

On to step 1:
If we divide 1 by 574, we get 0 and a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Fetch the next digit (8) from the dividend, attach it to 1 and continue: 18 / 574

Advancing to step 2:
574 can be fit into 18 0 times, resulting in a remainder of 18.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 18 and we're left with 18.
Fetch the next digit (2) from the dividend, attach it to 18 and continue: 182 / 574

Going ahead to step 3:
182 divided by 574 is 0 with a remainder of 182.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 182 and we're left with 182.
Grab the next digit (8) from the dividend, add it to 182, then carry on: 1828 / 574

Moving on to step 4:
574 can be fit into 1828 3 times, resulting in a remainder of 106.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtract 1722 from 1828 to get 106.
Bring next digit (0) of the dividend behind the 106 and repeat the process: 1060 / 574

Advancing to step 5:
574 can be fit into 1060 1 times, resulting in a remainder of 486.
The number 1 becomes the next digit in our result. 
Result so far: 31.0
Subtracting 574 from 1060 leaves us with 486.
Include the next digit (9) from the dividend after 486, then repeat: 4869 / 574

Advancing to step 6:
574 goes into 4869 8 times with a remainder of 277.
Write down 8 as next digit of the result. 
Result so far: 318.0
If we take 4592 away from 4869, we end up with 277.
Grab the next digit (6) from the dividend, add it to 277, then carry on: 2776 / 574

Moving on to step 7:
2776 divided by 574 is 4 with a remainder of 480.
The number 4 becomes the next digit in our result. 
Result so far: 3184.0
The remainder is 480 after subtracting 2296 from 2776.
Fetch the next digit (1) from the dividend, attach it to 480 and continue: 4801 / 574

Let's proceed to step 8:
When dividing 4801 by 574, we get 8 with a remainder of 209.
Use 8 as the next digit of our solution. 
Result so far: 31848.0
The remainder is 209 after subtracting 4592 from 4801.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2090, and continue the process.

On to step 9:
2090 divided by 574 is 3 with a remainder of 368.
Write down 3 as next digit of the result. 
Result so far: 31848.3
Deduct 1722 from 2090 and we're left with 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

Let's proceed to step 10:
574 can be fit into 3680 6 times, resulting in a remainder of 236.
The number 6 becomes the next digit in our result. 
Result so far: 31848.36
Subtract 3444 from 3680 to get 236.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2360, and continue the process.

Going ahead to step 11:
574 can be fit into 2360 4 times, resulting in a remainder of 64.
The number 4 becomes the next digit in our result. 
Result so far: 31848.364
If we take 2296 away from 2360, we end up with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Going ahead to step 12:
If we divide 640 by 574, we get 1 and a remainder of 66.
Write down 1 as next digit of the result. 
Result so far: 31848.3641
Subtracting 574 from 640 leaves us with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Let's proceed to step 13:
574 can be fit into 660 1 times, resulting in a remainder of 86.
The number 1 becomes the next digit in our result. 
Result so far: 31848.36411
The remainder is 86 after subtracting 574 from 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

The final outcome is 31848.36411, with a leftover of 8.6e-05.