39904034 ÷ 573 
The aim is to understand the frequency of 573 in 39904034.

Going ahead to step 1:
If we divide 3 by 573, we get 0 and a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 573

Advancing to step 2:
573 can be fit into 39 0 times, resulting in a remainder of 39.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 39 and we're left with 39.
Fetch the next digit (9) from the dividend, attach it to 39 and continue: 399 / 573

Step 3:
If we divide 399 by 573, we get 0 and a remainder of 399.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 399, we end up with 399.
Bring next digit (0) of the dividend behind the 399 and repeat the process: 3990 / 573

On to step 4:
3990 divided by 573 is 6 with a remainder of 552.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Subtract 3438 from 3990 to get 552.
Fetch the next digit (4) from the dividend, attach it to 552 and continue: 5524 / 573

Advancing to step 5:
5524 divided by 573 is 9 with a remainder of 367.
The next digit of our result is 9. 
Result so far: 69.0
Subtracting 5157 from 5524 leaves us with 367.
Include the next digit (0) from the dividend after 367, then repeat: 3670 / 573

Going ahead to step 6:
If we divide 3670 by 573, we get 6 and a remainder of 232.
The number 6 becomes the next digit in our result. 
Result so far: 696.0
The remainder is 232 after subtracting 3438 from 3670.
Fetch the next digit (3) from the dividend, attach it to 232 and continue: 2323 / 573

Moving on to step 7:
2323 divided by 573 is 4 with a remainder of 31.
The next digit of our result is 4. 
Result so far: 6964.0
The remainder is 31 after subtracting 2292 from 2323.
Append the next digit (4) from the dividend to 31 and continue with: 314 / 573

Let's proceed to step 8:
573 can be fit into 314 0 times, resulting in a remainder of 314.
The next digit of our result is 0. 
Result so far: 69640.0
Subtracting 0 from 314 leaves us with 314.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3140, and continue the process.

Moving on to step 9:
573 can be fit into 3140 5 times, resulting in a remainder of 275.
The next digit of our result is 5. 
Result so far: 69640.5
The remainder is 275 after subtracting 2865 from 3140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2750, and continue the process.

Let's proceed to step 10:
573 goes into 2750 4 times with a remainder of 458.
Record the quotient 4 as the next digit in the result. 
Result so far: 69640.54
The remainder is 458 after subtracting 2292 from 2750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4580, and continue the process.

Let's proceed to step 11:
4580 divided by 573 is 7 with a remainder of 569.
Record the quotient 7 as the next digit in the result. 
Result so far: 69640.547
If we subtract 4011 from 4580, we get 569.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5690, and continue the process.

Going ahead to step 12:
573 goes into 5690 9 times with a remainder of 533.
Put 9 as the next digit of the answer. 
Result so far: 69640.5479
If we take 5157 away from 5690, we end up with 533.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5330, and continue the process.

Going ahead to step 13:
573 goes into 5330 9 times with a remainder of 173.
Record the quotient 9 as the next digit in the result. 
Result so far: 69640.54799
If we take 5157 away from 5330, we end up with 173.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1730, and continue the process.

Our division results in 69640.54799 with a remaining 0.000173.