We're dividing 320586 by 87 
The aim is to understand the frequency of 87 in 320586.

Step 1:
87 can be fit into 3 0 times, resulting in a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Take the next digit (2) from the dividend and append it to 3, then repeat: 32 / 87

Step 2:
87 goes into 32 0 times with a remainder of 32.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 32 after subtracting 0 from 32.
Fetch the next digit (0) from the dividend, attach it to 32 and continue: 320 / 87

Step 3:
87 can be fit into 320 3 times, resulting in a remainder of 59.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we take 261 away from 320, we end up with 59.
Bring next digit (5) of the dividend behind the 59 and repeat the process: 595 / 87

Let's proceed to step 4:
595 divided by 87 is 6 with a remainder of 73.
Write down 6 as next digit of the result. 
Result so far: 36.0
Deduct 522 from 595 and we're left with 73.
Include the next digit (8) from the dividend after 73, then repeat: 738 / 87

Moving on to step 5:
87 goes into 738 8 times with a remainder of 42.
Record the quotient 8 as the next digit in the result. 
Result so far: 368.0
If we subtract 696 from 738, we get 42.
Append the next digit (6) from the dividend to 42 and continue with: 426 / 87

On to step 6:
When dividing 426 by 87, we get 4 with a remainder of 78.
Record the quotient 4 as the next digit in the result. 
Result so far: 3684.0
The remainder is 78 after subtracting 348 from 426.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Moving on to step 7:
The number 87 fits into 780 8 times, leaving a remainder of 84.
The next digit of our result is 8. 
Result so far: 3684.8
If we take 696 away from 780, we end up with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Let's proceed to step 8:
If we divide 840 by 87, we get 9 and a remainder of 57.
Write down 9 as next digit of the result. 
Result so far: 3684.89
Subtracting 783 from 840 leaves us with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Moving on to step 9:
The number 87 fits into 570 6 times, leaving a remainder of 48.
The number 6 becomes the next digit in our result. 
Result so far: 3684.896
Subtracting 522 from 570 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 10:
480 divided by 87 is 5 with a remainder of 45.
The number 5 becomes the next digit in our result. 
Result so far: 3684.8965
If we subtract 435 from 480, we get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Advancing to step 11:
The number 87 fits into 450 5 times, leaving a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 3684.89655
Subtract 435 from 450 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Our division results in 3684.89655 with a remaining 1.5e-05.