81189400 ÷ 573 
The aim is to understand the frequency of 573 in 81189400.

Advancing to step 1:
573 can be fit into 8 0 times, resulting in a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 573

Let's proceed to step 2:
If we divide 81 by 573, we get 0 and a remainder of 81.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 81, we get 81.
Bring next digit (1) of the dividend behind the 81 and repeat the process: 811 / 573

Advancing to step 3:
573 goes into 811 1 times with a remainder of 238.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 573 from 811, we get 238.
Include the next digit (8) from the dividend after 238, then repeat: 2388 / 573

Going ahead to step 4:
When dividing 2388 by 573, we get 4 with a remainder of 96.
Write down 4 as next digit of the result. 
Result so far: 14.0
If we take 2292 away from 2388, we end up with 96.
Include the next digit (9) from the dividend after 96, then repeat: 969 / 573

Advancing to step 5:
573 goes into 969 1 times with a remainder of 396.
Record the quotient 1 as the next digit in the result. 
Result so far: 141.0
Deduct 573 from 969 and we're left with 396.
Append the next digit (4) from the dividend to 396 and continue with: 3964 / 573

Moving on to step 6:
The number 573 fits into 3964 6 times, leaving a remainder of 526.
The number 6 becomes the next digit in our result. 
Result so far: 1416.0
Deduct 3438 from 3964 and we're left with 526.
Take the next digit (0) from the dividend and append it to 526, then repeat: 5260 / 573

On to step 7:
When dividing 5260 by 573, we get 9 with a remainder of 103.
Use 9 as the next digit of our solution. 
Result so far: 14169.0
The remainder is 103 after subtracting 5157 from 5260.
Take the next digit (0) from the dividend and append it to 103, then repeat: 1030 / 573

Going ahead to step 8:
The number 573 fits into 1030 1 times, leaving a remainder of 457.
The number 1 becomes the next digit in our result. 
Result so far: 141691.0
The remainder is 457 after subtracting 573 from 1030.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4570, and continue the process.

Moving on to step 9:
The number 573 fits into 4570 7 times, leaving a remainder of 559.
Put 7 as the next digit of the answer. 
Result so far: 141691.7
Deduct 4011 from 4570 and we're left with 559.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5590, and continue the process.

Let's proceed to step 10:
5590 divided by 573 is 9 with a remainder of 433.
The number 9 becomes the next digit in our result. 
Result so far: 141691.79
Subtract 5157 from 5590 to get 433.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4330, and continue the process.

Step 11:
573 goes into 4330 7 times with a remainder of 319.
The number 7 becomes the next digit in our result. 
Result so far: 141691.797
Subtracting 4011 from 4330 leaves us with 319.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3190, and continue the process.

Going ahead to step 12:
573 goes into 3190 5 times with a remainder of 325.
Use 5 as the next digit of our solution. 
Result so far: 141691.7975
If we subtract 2865 from 3190, 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.

Step 13:
If we divide 3250 by 573, we get 5 and a remainder of 385.
Put 5 as the next digit of the answer. 
Result so far: 141691.79755
Deduct 2865 from 3250 and we're left 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.

In conclusion, the division gives 141691.79755 with a balance of 0.000385.