387144 divided by 87 
The aim is to understand the frequency of 87 in 387144.

Step 1:
If we divide 3 by 87, we get 0 and a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Bring next digit (8) of the dividend behind the 3 and repeat the process: 38 / 87

Going ahead to step 2:
38 divided by 87 is 0 with a remainder of 38.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 38 and we're left with 38.
Include the next digit (7) from the dividend after 38, then repeat: 387 / 87

Let's proceed to step 3:
The number 87 fits into 387 4 times, leaving a remainder of 39.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Subtract 348 from 387 to get 39.
Grab the next digit (1) from the dividend, add it to 39, then carry on: 391 / 87

Going ahead to step 4:
The number 87 fits into 391 4 times, leaving a remainder of 43.
Record the quotient 4 as the next digit in the result. 
Result so far: 44.0
Subtracting 348 from 391 leaves us with 43.
Grab the next digit (4) from the dividend, add it to 43, then carry on: 434 / 87

On to step 5:
The number 87 fits into 434 4 times, leaving a remainder of 86.
Write down 4 as next digit of the result. 
Result so far: 444.0
If we subtract 348 from 434, we get 86.
Bring next digit (4) of the dividend behind the 86 and repeat the process: 864 / 87

Going ahead to step 6:
The number 87 fits into 864 9 times, leaving a remainder of 81.
The next digit of our result is 9. 
Result so far: 4449.0
The remainder is 81 after subtracting 783 from 864.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Step 7:
If we divide 810 by 87, we get 9 and a remainder of 27.
Write down 9 as next digit of the result. 
Result so far: 4449.9
If we subtract 783 from 810, we get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Step 8:
270 divided by 87 is 3 with a remainder of 9.
The number 3 becomes the next digit in our result. 
Result so far: 4449.93
The remainder is 9 after subtracting 261 from 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 9:
87 can be fit into 90 1 times, resulting in a remainder of 3.
The next digit of our result is 1. 
Result so far: 4449.931
If we take 87 away from 90, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 10:
87 goes into 30 0 times with a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 4449.931
If we subtract 0 from 30, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 11:
If we divide 300 by 87, we get 3 and a remainder of 39.
Put 3 as the next digit of the answer. 
Result so far: 4449.93103
The remainder is 39 after subtracting 261 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

On to step 12:
390 divided by 87 is 4 with a remainder of 42.
Put 4 as the next digit of the answer. 
Result so far: 4449.931034
If we subtract 348 from 390, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 13:
The number 87 fits into 420 4 times, leaving a remainder of 72.
Use 4 as the next digit of our solution. 
Result so far: 4449.9310344
If we take 348 away from 420, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

The final result is 4449.9310344 with a remainder of 7.2e-07.