We divide 413501 by 87
The aim is to understand the frequency of 87 in 413501.

Going ahead to step 1:
87 goes into 4 0 times with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Append the next digit (1) from the dividend to 4 and continue with: 41 / 87

Going ahead to step 2:
87 goes into 41 0 times with a remainder of 41.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 41 leaves us with 41.
Append the next digit (3) from the dividend to 41 and continue with: 413 / 87

Advancing to step 3:
87 goes into 413 4 times with a remainder of 65.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Deduct 348 from 413 and we're left with 65.
Bring next digit (5) of the dividend behind the 65 and repeat the process: 655 / 87

Moving on to step 4:
655 divided by 87 is 7 with a remainder of 46.
The number 7 becomes the next digit in our result. 
Result so far: 47.0
If we subtract 609 from 655, we get 46.
Take the next digit (0) from the dividend and append it to 46, then repeat: 460 / 87

Let's proceed to step 5:
When dividing 460 by 87, we get 5 with a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 475.0
Subtract 435 from 460 to get 25.
Take the next digit (1) from the dividend and append it to 25, then repeat: 251 / 87

On to step 6:
87 can be fit into 251 2 times, resulting in a remainder of 77.
The next digit of our result is 2. 
Result so far: 4752.0
Deduct 174 from 251 and we're left with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Step 7:
770 divided by 87 is 8 with a remainder of 74.
The number 8 becomes the next digit in our result. 
Result so far: 4752.8
Subtract 696 from 770 to get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Advancing to step 8:
740 divided by 87 is 8 with a remainder of 44.
Use 8 as the next digit of our solution. 
Result so far: 4752.88
Deduct 696 from 740 and we're left 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.

The final result is 4752.88 with a remainder of 0.044.