We're dividing 726128 by 87 
The aim is to understand the frequency of 87 in 726128.

Let's proceed to step 1:
7 divided by 87 is 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 87

On to step 2:
When dividing 72 by 87, we get 0 with a remainder of 72.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 72 and we're left with 72.
Fetch the next digit (6) from the dividend, attach it to 72 and continue: 726 / 87

Going ahead to step 3:
If we divide 726 by 87, we get 8 and a remainder of 30.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Subtract 696 from 726 to get 30.
Append the next digit (1) from the dividend to 30 and continue with: 301 / 87

On to step 4:
The number 87 fits into 301 3 times, leaving a remainder of 40.
Use 3 as the next digit of our solution. 
Result so far: 83.0
Deduct 261 from 301 and we're left with 40.
Take the next digit (2) from the dividend and append it to 40, then repeat: 402 / 87

Going ahead to step 5:
87 can be fit into 402 4 times, resulting in a remainder of 54.
The next digit of our result is 4. 
Result so far: 834.0
Deduct 348 from 402 and we're left with 54.
Include the next digit (8) from the dividend after 54, then repeat: 548 / 87

Moving on to step 6:
The number 87 fits into 548 6 times, leaving a remainder of 26.
Use 6 as the next digit of our solution. 
Result so far: 8346.0
Subtract 522 from 548 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Step 7:
The number 87 fits into 260 2 times, leaving a remainder of 86.
Write down 2 as next digit of the result. 
Result so far: 8346.2
If we subtract 174 from 260, we get 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Advancing to step 8:
87 can be fit into 860 9 times, resulting in a remainder of 77.
Use 9 as the next digit of our solution. 
Result so far: 8346.29
Subtract 783 from 860 to get 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Moving on to step 9:
When dividing 770 by 87, we get 8 with a remainder of 74.
The next digit of our result is 8. 
Result so far: 8346.298
Subtracting 696 from 770 leaves us with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Going ahead to step 10:
87 can be fit into 740 8 times, resulting in a remainder of 44.
Record the quotient 8 as the next digit in the result. 
Result so far: 8346.2988
Subtracting 696 from 740 leaves us with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Our division results in 8346.2988 with a remaining 0.00044.