We look at the division of 570742 by 87 
The aim is to understand the frequency of 87 in 570742.

Going ahead to step 1:
87 goes into 5 0 times with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Include the next digit (7) from the dividend after 5, then repeat: 57 / 87

Going ahead to step 2:
87 goes into 57 0 times with a remainder of 57.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 57 to get 57.
Bring next digit (0) of the dividend behind the 57 and repeat the process: 570 / 87

Moving on to step 3:
The number 87 fits into 570 6 times, leaving a remainder of 48.
Put 6 as the next digit of the answer. 
Result so far: 6.0
Subtract 522 from 570 to get 48.
Fetch the next digit (7) from the dividend, attach it to 48 and continue: 487 / 87

Going ahead to step 4:
The number 87 fits into 487 5 times, leaving a remainder of 52.
The number 5 becomes the next digit in our result. 
Result so far: 65.0
Subtract 435 from 487 to get 52.
Bring next digit (4) of the dividend behind the 52 and repeat the process: 524 / 87

Going ahead to step 5:
87 goes into 524 6 times with a remainder of 2.
The next digit of our result is 6. 
Result so far: 656.0
Deduct 522 from 524 and we're left with 2.
Take the next digit (2) from the dividend and append it to 2, then repeat: 22 / 87

On to step 6:
87 goes into 22 0 times with a remainder of 22.
Write down 0 as next digit of the result. 
Result so far: 6560.0
Subtract 0 from 22 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 7:
87 can be fit into 220 2 times, resulting in a remainder of 46.
The number 2 becomes the next digit in our result. 
Result so far: 6560.2
Deduct 174 from 220 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 8:
87 goes into 460 5 times with a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 6560.25
If we subtract 435 from 460, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Going ahead to step 9:
250 divided by 87 is 2 with a remainder of 76.
Put 2 as the next digit of the answer. 
Result so far: 6560.252
The remainder is 76 after subtracting 174 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Let's proceed to step 10:
The number 87 fits into 760 8 times, leaving a remainder of 64.
Put 8 as the next digit of the answer. 
Result so far: 6560.2528
The remainder is 64 after subtracting 696 from 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Moving on to step 11:
87 can be fit into 640 7 times, resulting in a remainder of 31.
Put 7 as the next digit of the answer. 
Result so far: 6560.25287
The remainder is 31 after subtracting 609 from 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

On to step 12:
The number 87 fits into 310 3 times, leaving a remainder of 49.
Put 3 as the next digit of the answer. 
Result so far: 6560.252873
Subtract 261 from 310 to get 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Let's proceed to step 13:
If we divide 490 by 87, we get 5 and a remainder of 55.
Record the quotient 5 as the next digit in the result. 
Result so far: 6560.2528735
Deduct 435 from 490 and we're left with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Going ahead to step 14:
87 goes into 550 6 times with a remainder of 28.
Use 6 as the next digit of our solution. 
Result so far: 6560.25287356
Subtracting 522 from 550 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

After the division, we end up with 6560.25287356 and a remainder of 2.8e-08.