We're dividing 28505607 by 574 
The aim is to understand the frequency of 574 in 28505607.

Step 1:
The number 574 fits into 2 0 times, leaving a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Grab the next digit (8) from the dividend, add it to 2, then carry on: 28 / 574

Going ahead to step 2:
When dividing 28 by 574, we get 0 with a remainder of 28.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 28 and we're left with 28.
Fetch the next digit (5) from the dividend, attach it to 28 and continue: 285 / 574

Moving on to step 3:
285 divided by 574 is 0 with a remainder of 285.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 285 to get 285.
Take the next digit (0) from the dividend and append it to 285, then repeat: 2850 / 574

Let's proceed to step 4:
When dividing 2850 by 574, we get 4 with a remainder of 554.
Write down 4 as next digit of the result. 
Result so far: 4.0
Deduct 2296 from 2850 and we're left with 554.
Append the next digit (5) from the dividend to 554 and continue with: 5545 / 574

Step 5:
5545 divided by 574 is 9 with a remainder of 379.
The next digit of our result is 9. 
Result so far: 49.0
The remainder is 379 after subtracting 5166 from 5545.
Fetch the next digit (6) from the dividend, attach it to 379 and continue: 3796 / 574

On to step 6:
574 can be fit into 3796 6 times, resulting in a remainder of 352.
The number 6 becomes the next digit in our result. 
Result so far: 496.0
Subtracting 3444 from 3796 leaves us with 352.
Take the next digit (0) from the dividend and append it to 352, then repeat: 3520 / 574

On to step 7:
574 goes into 3520 6 times with a remainder of 76.
Record the quotient 6 as the next digit in the result. 
Result so far: 4966.0
Subtracting 3444 from 3520 leaves us with 76.
Append the next digit (7) from the dividend to 76 and continue with: 767 / 574

Moving on to step 8:
If we divide 767 by 574, we get 1 and a remainder of 193.
The number 1 becomes the next digit in our result. 
Result so far: 49661.0
Subtracting 574 from 767 leaves us with 193.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1930, and continue the process.

Advancing to step 9:
If we divide 1930 by 574, we get 3 and a remainder of 208.
Put 3 as the next digit of the answer. 
Result so far: 49661.3
If we take 1722 away from 1930, we end up with 208.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

On to step 10:
The number 574 fits into 2080 3 times, leaving a remainder of 358.
The next digit of our result is 3. 
Result so far: 49661.33
Subtract 1722 from 2080 to get 358.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3580, and continue the process.

After the division, we end up with 49661.33 and a remainder of 0.358.