We look at the division of 339260 by 87 
The aim is to understand the frequency of 87 in 339260.

Step 1:
When dividing 3 by 87, we get 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Grab the next digit (3) from the dividend, add it to 3, then carry on: 33 / 87

Going ahead to step 2:
33 divided by 87 is 0 with a remainder of 33.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 33 and we're left with 33.
Include the next digit (9) from the dividend after 33, then repeat: 339 / 87

Let's proceed to step 3:
The number 87 fits into 339 3 times, leaving a remainder of 78.
Write down 3 as next digit of the result. 
Result so far: 3.0
Deduct 261 from 339 and we're left with 78.
Grab the next digit (2) from the dividend, add it to 78, then carry on: 782 / 87

Going ahead to step 4:
When dividing 782 by 87, we get 8 with a remainder of 86.
Write down 8 as next digit of the result. 
Result so far: 38.0
Subtract 696 from 782 to get 86.
Grab the next digit (6) from the dividend, add it to 86, then carry on: 866 / 87

Let's proceed to step 5:
87 goes into 866 9 times with a remainder of 83.
Put 9 as the next digit of the answer. 
Result so far: 389.0
Subtracting 783 from 866 leaves us with 83.
Fetch the next digit (0) from the dividend, attach it to 83 and continue: 830 / 87

Going ahead to step 6:
If we divide 830 by 87, we get 9 and a remainder of 47.
The next digit of our result is 9. 
Result so far: 3899.0
If we take 783 away from 830, we end up with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Let's proceed to step 7:
87 can be fit into 470 5 times, resulting in a remainder of 35.
Write down 5 as next digit of the result. 
Result so far: 3899.5
If we take 435 away from 470, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Step 8:
87 can be fit into 350 4 times, resulting in a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 3899.54
If we subtract 348 from 350, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 9:
87 goes into 20 0 times with a remainder of 20.
The next digit of our result is 0. 
Result so far: 3899.54
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 10:
When dividing 200 by 87, we get 2 with a remainder of 26.
Write down 2 as next digit of the result. 
Result so far: 3899.5402
If we take 174 away from 200, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Going ahead to step 11:
When dividing 260 by 87, we get 2 with a remainder of 86.
Use 2 as the next digit of our solution. 
Result so far: 3899.54022
If we take 174 away from 260, we end up with 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

After the division, we end up with 3899.54022 and a remainder of 8.6e-05.