Let's divide 520693 by 87
The aim is to understand the frequency of 87 in 520693.

Advancing to step 1:
The number 87 fits into 5 0 times, leaving a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Grab the next digit (2) from the dividend, add it to 5, then carry on: 52 / 87

On to step 2:
If we divide 52 by 87, we get 0 and a remainder of 52.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 52 and we're left with 52.
Include the next digit (0) from the dividend after 52, then repeat: 520 / 87

Going ahead to step 3:
If we divide 520 by 87, we get 5 and a remainder of 85.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Subtract 435 from 520 to get 85.
Take the next digit (6) from the dividend and append it to 85, then repeat: 856 / 87

Let's proceed to step 4:
856 divided by 87 is 9 with a remainder of 73.
Write down 9 as next digit of the result. 
Result so far: 59.0
Subtracting 783 from 856 leaves us with 73.
Bring next digit (9) of the dividend behind the 73 and repeat the process: 739 / 87

Moving on to step 5:
The number 87 fits into 739 8 times, leaving a remainder of 43.
Put 8 as the next digit of the answer. 
Result so far: 598.0
If we subtract 696 from 739, we get 43.
Include the next digit (3) from the dividend after 43, then repeat: 433 / 87

Let's proceed to step 6:
87 goes into 433 4 times with a remainder of 85.
Record the quotient 4 as the next digit in the result. 
Result so far: 5984.0
If we subtract 348 from 433, we get 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Let's proceed to step 7:
87 can be fit into 850 9 times, resulting in a remainder of 67.
Record the quotient 9 as the next digit in the result. 
Result so far: 5984.9
Subtracting 783 from 850 leaves us with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Step 8:
670 divided by 87 is 7 with a remainder of 61.
The next digit of our result is 7. 
Result so far: 5984.97
Deduct 609 from 670 and we're left with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Advancing to step 9:
If we divide 610 by 87, we get 7 and a remainder of 1.
Use 7 as the next digit of our solution. 
Result so far: 5984.977
The remainder is 1 after subtracting 609 from 610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The quotient of the division is 5984.977, and the remainder is 0.0001.