We look at the division of 85153945 by 573 
The aim is to understand the frequency of 573 in 85153945.

Going ahead to step 1:
When dividing 8 by 573, we get 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 573

Let's proceed to step 2:
When dividing 85 by 573, we get 0 with a remainder of 85.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 85 after subtracting 0 from 85.
Fetch the next digit (1) from the dividend, attach it to 85 and continue: 851 / 573

Let's proceed to step 3:
573 goes into 851 1 times with a remainder of 278.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 278 after subtracting 573 from 851.
Fetch the next digit (5) from the dividend, attach it to 278 and continue: 2785 / 573

Moving on to step 4:
The number 573 fits into 2785 4 times, leaving a remainder of 493.
Write down 4 as next digit of the result. 
Result so far: 14.0
Subtracting 2292 from 2785 leaves us with 493.
Fetch the next digit (3) from the dividend, attach it to 493 and continue: 4933 / 573

Moving on to step 5:
573 goes into 4933 8 times with a remainder of 349.
Use 8 as the next digit of our solution. 
Result so far: 148.0
Deduct 4584 from 4933 and we're left with 349.
Grab the next digit (9) from the dividend, add it to 349, then carry on: 3499 / 573

On to step 6:
If we divide 3499 by 573, we get 6 and a remainder of 61.
The number 6 becomes the next digit in our result. 
Result so far: 1486.0
If we subtract 3438 from 3499, we get 61.
Append the next digit (4) from the dividend to 61 and continue with: 614 / 573

Let's proceed to step 7:
573 can be fit into 614 1 times, resulting in a remainder of 41.
Write down 1 as next digit of the result. 
Result so far: 14861.0
Subtracting 573 from 614 leaves us with 41.
Grab the next digit (5) from the dividend, add it to 41, then carry on: 415 / 573

Going ahead to step 8:
If we divide 415 by 573, we get 0 and a remainder of 415.
Use 0 as the next digit of our solution. 
Result so far: 148610.0
The remainder is 415 after subtracting 0 from 415.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4150, and continue the process.

Going ahead to step 9:
When dividing 4150 by 573, we get 7 with a remainder of 139.
The number 7 becomes the next digit in our result. 
Result so far: 148610.7
If we subtract 4011 from 4150, we get 139.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1390, and continue the process.

Going ahead to step 10:
The number 573 fits into 1390 2 times, leaving a remainder of 244.
Use 2 as the next digit of our solution. 
Result so far: 148610.72
Subtract 1146 from 1390 to get 244.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2440, and continue the process.

Moving on to step 11:
If we divide 2440 by 573, we get 4 and a remainder of 148.
The next digit of our result is 4. 
Result so far: 148610.724
Deduct 2292 from 2440 and we're left with 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

Going ahead to step 12:
The number 573 fits into 1480 2 times, leaving a remainder of 334.
Write down 2 as next digit of the result. 
Result so far: 148610.7242
Subtract 1146 from 1480 to get 334.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3340, and continue the process.

Moving on to step 13:
3340 divided by 573 is 5 with a remainder of 475.
Record the quotient 5 as the next digit in the result. 
Result so far: 148610.72425
If we take 2865 away from 3340, we end up with 475.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4750, and continue the process.

On to step 14:
The number 573 fits into 4750 8 times, leaving a remainder of 166.
Put 8 as the next digit of the answer. 
Result so far: 148610.724258
If we subtract 4584 from 4750, we get 166.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

Advancing to step 15:
The number 573 fits into 1660 2 times, leaving a remainder of 514.
The number 2 becomes the next digit in our result. 
Result so far: 148610.7242582
If we subtract 1146 from 1660, we get 514.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5140, and continue the process.

Step 16:
If we divide 5140 by 573, we get 8 and a remainder of 556.
Use 8 as the next digit of our solution. 
Result so far: 148610.72425828
If we subtract 4584 from 5140, we get 556.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5560, and continue the process.

The final outcome is 148610.72425828, with a leftover of 5.56e-07.