173072 divided by 87 
The aim is to understand the frequency of 87 in 173072.

Moving on to step 1:
When dividing 1 by 87, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Include the next digit (7) from the dividend after 1, then repeat: 17 / 87

Advancing to step 2:
If we divide 17 by 87, we get 0 and a remainder of 17.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 17, we get 17.
Append the next digit (3) from the dividend to 17 and continue with: 173 / 87

Moving on to step 3:
When dividing 173 by 87, we get 1 with a remainder of 86.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 87 from 173 to get 86.
Include the next digit (0) from the dividend after 86, then repeat: 860 / 87

Going ahead to step 4:
The number 87 fits into 860 9 times, leaving a remainder of 77.
Put 9 as the next digit of the answer. 
Result so far: 19.0
Subtracting 783 from 860 leaves us with 77.
Fetch the next digit (7) from the dividend, attach it to 77 and continue: 777 / 87

On to step 5:
777 divided by 87 is 8 with a remainder of 81.
Use 8 as the next digit of our solution. 
Result so far: 198.0
Subtracting 696 from 777 leaves us with 81.
Fetch the next digit (2) from the dividend, attach it to 81 and continue: 812 / 87

Advancing to step 6:
87 can be fit into 812 9 times, resulting in a remainder of 29.
Record the quotient 9 as the next digit in the result. 
Result so far: 1989.0
If we take 783 away from 812, we end up with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Let's proceed to step 7:
If we divide 290 by 87, we get 3 and a remainder of 29.
Use 3 as the next digit of our solution. 
Result so far: 1989.3
Deduct 261 from 290 and we're left with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Going ahead to step 8:
290 divided by 87 is 3 with a remainder of 29.
Write down 3 as next digit of the result. 
Result so far: 1989.33
The remainder is 29 after subtracting 261 from 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

The quotient of the division is 1989.33, and the remainder is 0.029.