78872931 ÷ 573 
The aim is to understand the frequency of 573 in 78872931.

Moving on to step 1:
The number 573 fits into 7 0 times, leaving a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 573

Step 2:
78 divided by 573 is 0 with a remainder of 78.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 78 after subtracting 0 from 78.
Append the next digit (8) from the dividend to 78 and continue with: 788 / 573

Going ahead to step 3:
When dividing 788 by 573, we get 1 with a remainder of 215.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 215 after subtracting 573 from 788.
Fetch the next digit (7) from the dividend, attach it to 215 and continue: 2157 / 573

Advancing to step 4:
If we divide 2157 by 573, we get 3 and a remainder of 438.
Put 3 as the next digit of the answer. 
Result so far: 13.0
The remainder is 438 after subtracting 1719 from 2157.
Grab the next digit (2) from the dividend, add it to 438, then carry on: 4382 / 573

Step 5:
The number 573 fits into 4382 7 times, leaving a remainder of 371.
Put 7 as the next digit of the answer. 
Result so far: 137.0
The remainder is 371 after subtracting 4011 from 4382.
Append the next digit (9) from the dividend to 371 and continue with: 3719 / 573

Let's proceed to step 6:
3719 divided by 573 is 6 with a remainder of 281.
The next digit of our result is 6. 
Result so far: 1376.0
If we subtract 3438 from 3719, we get 281.
Bring next digit (3) of the dividend behind the 281 and repeat the process: 2813 / 573

Let's proceed to step 7:
The number 573 fits into 2813 4 times, leaving a remainder of 521.
The number 4 becomes the next digit in our result. 
Result so far: 13764.0
Subtracting 2292 from 2813 leaves us with 521.
Take the next digit (1) from the dividend and append it to 521, then repeat: 5211 / 573

Going ahead to step 8:
If we divide 5211 by 573, we get 9 and a remainder of 54.
The number 9 becomes the next digit in our result. 
Result so far: 137649.0
The remainder is 54 after subtracting 5157 from 5211.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Advancing to step 9:
When dividing 540 by 573, we get 0 with a remainder of 540.
The number 0 becomes the next digit in our result. 
Result so far: 137649.0
If we take 0 away from 540, we end up with 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

On to step 10:
573 can be fit into 5400 9 times, resulting in a remainder of 243.
Put 9 as the next digit of the answer. 
Result so far: 137649.09
Deduct 5157 from 5400 and we're left 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.

On to step 11:
The number 573 fits into 2430 4 times, leaving a remainder of 138.
Use 4 as the next digit of our solution. 
Result so far: 137649.094
Subtract 2292 from 2430 to get 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

On to step 12:
1380 divided by 573 is 2 with a remainder of 234.
Use 2 as the next digit of our solution. 
Result so far: 137649.0942
If we subtract 1146 from 1380, we get 234.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2340, and continue the process.

On to step 13:
2340 divided by 573 is 4 with a remainder of 48.
Put 4 as the next digit of the answer. 
Result so far: 137649.09424
If we subtract 2292 from 2340, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 14:
573 can be fit into 480 0 times, resulting in a remainder of 480.
The next digit of our result is 0. 
Result so far: 137649.09424
If we subtract 0 from 480, we get 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Going ahead to step 15:
573 goes into 4800 8 times with a remainder of 216.
Write down 8 as next digit of the result. 
Result so far: 137649.0942408
If we take 4584 away from 4800, we end up with 216.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

Step 16:
573 goes into 2160 3 times with a remainder of 441.
Write down 3 as next digit of the result. 
Result so far: 137649.09424083
Deduct 1719 from 2160 and we're left with 441.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4410, and continue the process.

After the division, we end up with 137649.09424083 and a remainder of 4.41e-07.