We're dividing 20561462 by 571 
The aim is to understand the frequency of 571 in 20561462.

On to step 1:
2 divided by 571 is 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 571

Going ahead to step 2:
20 divided by 571 is 0 with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 20, we get 20.
Fetch the next digit (5) from the dividend, attach it to 20 and continue: 205 / 571

On to step 3:
If we divide 205 by 571, we get 0 and a remainder of 205.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 205 after subtracting 0 from 205.
Include the next digit (6) from the dividend after 205, then repeat: 2056 / 571

Advancing to step 4:
The number 571 fits into 2056 3 times, leaving a remainder of 343.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Deduct 1713 from 2056 and we're left with 343.
Take the next digit (1) from the dividend and append it to 343, then repeat: 3431 / 571

On to step 5:
3431 divided by 571 is 6 with a remainder of 5.
The next digit of our result is 6. 
Result so far: 36.0
The remainder is 5 after subtracting 3426 from 3431.
Bring next digit (4) of the dividend behind the 5 and repeat the process: 54 / 571

Moving on to step 6:
571 goes into 54 0 times with a remainder of 54.
Record the quotient 0 as the next digit in the result. 
Result so far: 360.0
The remainder is 54 after subtracting 0 from 54.
Include the next digit (6) from the dividend after 54, then repeat: 546 / 571

Going ahead to step 7:
When dividing 546 by 571, we get 0 with a remainder of 546.
The number 0 becomes the next digit in our result. 
Result so far: 3600.0
Subtracting 0 from 546 leaves us with 546.
Take the next digit (2) from the dividend and append it to 546, then repeat: 5462 / 571

Advancing to step 8:
5462 divided by 571 is 9 with a remainder of 323.
Record the quotient 9 as the next digit in the result. 
Result so far: 36009.0
If we take 5139 away from 5462, we end up with 323.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3230, and continue the process.

Step 9:
When dividing 3230 by 571, we get 5 with a remainder of 375.
Use 5 as the next digit of our solution. 
Result so far: 36009.5
If we subtract 2855 from 3230, we get 375.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

On to step 10:
3750 divided by 571 is 6 with a remainder of 324.
Record the quotient 6 as the next digit in the result. 
Result so far: 36009.56
Subtract 3426 from 3750 to get 324.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

Let's proceed to step 11:
3240 divided by 571 is 5 with a remainder of 385.
The next digit of our result is 5. 
Result so far: 36009.565
Subtracting 2855 from 3240 leaves us with 385.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3850, and continue the process.

Advancing to step 12:
571 can be fit into 3850 6 times, resulting in a remainder of 424.
The next digit of our result is 6. 
Result so far: 36009.5656
Subtract 3426 from 3850 to get 424.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4240, and continue the process.

Step 13:
4240 divided by 571 is 7 with a remainder of 243.
Use 7 as the next digit of our solution. 
Result so far: 36009.56567
Subtracting 3997 from 4240 leaves us with 243.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2430, and continue the process.

Let's proceed to step 14:
571 can be fit into 2430 4 times, resulting in a remainder of 146.
Put 4 as the next digit of the answer. 
Result so far: 36009.565674
If we take 2284 away from 2430, we end up with 146.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1460, and continue the process.

Step 15:
1460 divided by 571 is 2 with a remainder of 318.
The number 2 becomes the next digit in our result. 
Result so far: 36009.5656742
The remainder is 318 after subtracting 1142 from 1460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3180, and continue the process.

Let's proceed to step 16:
If we divide 3180 by 571, we get 5 and a remainder of 325.
Record the quotient 5 as the next digit in the result. 
Result so far: 36009.56567425
If we subtract 2855 from 3180, we get 325.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3250, and continue the process.

The final outcome is 36009.56567425, with a leftover of 3.25e-07.