84525452 divided by 574 
The aim is to understand the frequency of 574 in 84525452.

On to step 1:
8 divided by 574 is 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Bring next digit (4) of the dividend behind the 8 and repeat the process: 84 / 574

Moving on to step 2:
If we divide 84 by 574, we get 0 and a remainder of 84.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 84, we end up with 84.
Take the next digit (5) from the dividend and append it to 84, then repeat: 845 / 574

On to step 3:
574 goes into 845 1 times with a remainder of 271.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 574 from 845 leaves us with 271.
Bring next digit (2) of the dividend behind the 271 and repeat the process: 2712 / 574

Advancing to step 4:
574 goes into 2712 4 times with a remainder of 416.
Record the quotient 4 as the next digit in the result. 
Result so far: 14.0
Deduct 2296 from 2712 and we're left with 416.
Bring next digit (5) of the dividend behind the 416 and repeat the process: 4165 / 574

Step 5:
The number 574 fits into 4165 7 times, leaving a remainder of 147.
Write down 7 as next digit of the result. 
Result so far: 147.0
If we subtract 4018 from 4165, we get 147.
Take the next digit (4) from the dividend and append it to 147, then repeat: 1474 / 574

Advancing to step 6:
When dividing 1474 by 574, we get 2 with a remainder of 326.
Use 2 as the next digit of our solution. 
Result so far: 1472.0
Deduct 1148 from 1474 and we're left with 326.
Append the next digit (5) from the dividend to 326 and continue with: 3265 / 574

Step 7:
574 can be fit into 3265 5 times, resulting in a remainder of 395.
The next digit of our result is 5. 
Result so far: 14725.0
Subtract 2870 from 3265 to get 395.
Bring next digit (2) of the dividend behind the 395 and repeat the process: 3952 / 574

Going ahead to step 8:
The number 574 fits into 3952 6 times, leaving a remainder of 508.
Put 6 as the next digit of the answer. 
Result so far: 147256.0
If we take 3444 away from 3952, we end up with 508.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5080, and continue the process.

Going ahead to step 9:
The number 574 fits into 5080 8 times, leaving a remainder of 488.
Record the quotient 8 as the next digit in the result. 
Result so far: 147256.8
If we subtract 4592 from 5080, we get 488.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4880, and continue the process.

Step 10:
The number 574 fits into 4880 8 times, leaving a remainder of 288.
The next digit of our result is 8. 
Result so far: 147256.88
The remainder is 288 after subtracting 4592 from 4880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

The quotient of the division is 147256.88, and the remainder is 0.288.