239400 divided by 87 
The aim is to understand the frequency of 87 in 239400.

Step 1:
2 divided by 87 is 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Take the next digit (3) from the dividend and append it to 2, then repeat: 23 / 87

Step 2:
If we divide 23 by 87, we get 0 and a remainder of 23.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 23 and we're left with 23.
Fetch the next digit (9) from the dividend, attach it to 23 and continue: 239 / 87

Moving on to step 3:
87 goes into 239 2 times with a remainder of 65.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
The remainder is 65 after subtracting 174 from 239.
Fetch the next digit (4) from the dividend, attach it to 65 and continue: 654 / 87

Step 4:
87 can be fit into 654 7 times, resulting in a remainder of 45.
Record the quotient 7 as the next digit in the result. 
Result so far: 27.0
Deduct 609 from 654 and we're left with 45.
Bring next digit (0) of the dividend behind the 45 and repeat the process: 450 / 87

Step 5:
87 goes into 450 5 times with a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 275.0
If we subtract 435 from 450, we get 15.
Bring next digit (0) of the dividend behind the 15 and repeat the process: 150 / 87

On to step 6:
The number 87 fits into 150 1 times, leaving a remainder of 63.
Use 1 as the next digit of our solution. 
Result so far: 2751.0
Subtract 87 from 150 to get 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Advancing to step 7:
87 can be fit into 630 7 times, resulting in a remainder of 21.
The next digit of our result is 7. 
Result so far: 2751.7
If we subtract 609 from 630, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 8:
If we divide 210 by 87, we get 2 and a remainder of 36.
Put 2 as the next digit of the answer. 
Result so far: 2751.72
Deduct 174 from 210 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 9:
87 goes into 360 4 times with a remainder of 12.
The number 4 becomes the next digit in our result. 
Result so far: 2751.724
Subtract 348 from 360 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 10:
87 can be fit into 120 1 times, resulting in a remainder of 33.
Use 1 as the next digit of our solution. 
Result so far: 2751.7241
If we subtract 87 from 120, we get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Let's proceed to step 11:
If we divide 330 by 87, we get 3 and a remainder of 69.
The next digit of our result is 3. 
Result so far: 2751.72413
If we take 261 away from 330, we end up with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Step 12:
87 goes into 690 7 times with a remainder of 81.
Put 7 as the next digit of the answer. 
Result so far: 2751.724137
Deduct 609 from 690 and we're left with 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

On to step 13:
810 divided by 87 is 9 with a remainder of 27.
Use 9 as the next digit of our solution. 
Result so far: 2751.7241379
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.

Going ahead to step 14:
270 divided by 87 is 3 with a remainder of 9.
Record the quotient 3 as the next digit in the result. 
Result so far: 2751.72413793
Subtracting 261 from 270 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

After the division, we end up with 2751.72413793 and a remainder of 9e-09.