We're dividing 297263 by 87 
The aim is to understand the frequency of 87 in 297263.

On to step 1:
If we divide 2 by 87, we get 0 and a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Fetch the next digit (9) from the dividend, attach it to 2 and continue: 29 / 87

On to step 2:
87 goes into 29 0 times with a remainder of 29.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 29 after subtracting 0 from 29.
Append the next digit (7) from the dividend to 29 and continue with: 297 / 87

Advancing to step 3:
If we divide 297 by 87, we get 3 and a remainder of 36.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtract 261 from 297 to get 36.
Bring next digit (2) of the dividend behind the 36 and repeat the process: 362 / 87

Advancing to step 4:
87 can be fit into 362 4 times, resulting in a remainder of 14.
Write down 4 as next digit of the result. 
Result so far: 34.0
If we subtract 348 from 362, we get 14.
Include the next digit (6) from the dividend after 14, then repeat: 146 / 87

Advancing to step 5:
87 can be fit into 146 1 times, resulting in a remainder of 59.
Put 1 as the next digit of the answer. 
Result so far: 341.0
Deduct 87 from 146 and we're left with 59.
Grab the next digit (3) from the dividend, add it to 59, then carry on: 593 / 87

Moving on to step 6:
87 can be fit into 593 6 times, resulting in a remainder of 71.
Put 6 as the next digit of the answer. 
Result so far: 3416.0
The remainder is 71 after subtracting 522 from 593.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Step 7:
87 goes into 710 8 times with a remainder of 14.
Use 8 as the next digit of our solution. 
Result so far: 3416.8
The remainder is 14 after subtracting 696 from 710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 8:
If we divide 140 by 87, we get 1 and a remainder of 53.
The next digit of our result is 1. 
Result so far: 3416.81
The remainder is 53 after subtracting 87 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Moving on to step 9:
87 goes into 530 6 times with a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 3416.816
Deduct 522 from 530 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 10:
The number 87 fits into 80 0 times, leaving a remainder of 80.
The next digit of our result is 0. 
Result so far: 3416.816
If we subtract 0 from 80, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 11:
If we divide 800 by 87, we get 9 and a remainder of 17.
Use 9 as the next digit of our solution. 
Result so far: 3416.81609
Deduct 783 from 800 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 12:
87 can be fit into 170 1 times, resulting in a remainder of 83.
The number 1 becomes the next digit in our result. 
Result so far: 3416.816091
If we take 87 away from 170, we end up with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Let's proceed to step 13:
87 can be fit into 830 9 times, resulting in a remainder of 47.
Write down 9 as next digit of the result. 
Result so far: 3416.8160919
If we subtract 783 from 830, we get 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Step 14:
470 divided by 87 is 5 with a remainder of 35.
Write down 5 as next digit of the result. 
Result so far: 3416.81609195
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.

Our division results in 3416.81609195 with a remaining 3.5e-08.