7312887 divided by 87 
The aim is to understand the frequency of 87 in 7312887.

Going ahead to step 1:
The number 87 fits into 7 0 times, leaving a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Include the next digit (3) from the dividend after 7, then repeat: 73 / 87

Going ahead to step 2:
When dividing 73 by 87, we get 0 with a remainder of 73.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 73, we get 73.
Grab the next digit (1) from the dividend, add it to 73, then carry on: 731 / 87

Going ahead to step 3:
87 can be fit into 731 8 times, resulting in a remainder of 35.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Subtract 696 from 731 to get 35.
Include the next digit (2) from the dividend after 35, then repeat: 352 / 87

On to step 4:
352 divided by 87 is 4 with a remainder of 4.
The next digit of our result is 4. 
Result so far: 84.0
If we subtract 348 from 352, we get 4.
Grab the next digit (8) from the dividend, add it to 4, then carry on: 48 / 87

Step 5:
The number 87 fits into 48 0 times, leaving a remainder of 48.
Put 0 as the next digit of the answer. 
Result so far: 840.0
The remainder is 48 after subtracting 0 from 48.
Append the next digit (8) from the dividend to 48 and continue with: 488 / 87

Advancing to step 6:
488 divided by 87 is 5 with a remainder of 53.
The number 5 becomes the next digit in our result. 
Result so far: 8405.0
Subtract 435 from 488 to get 53.
Fetch the next digit (7) from the dividend, attach it to 53 and continue: 537 / 87

Advancing to step 7:
The number 87 fits into 537 6 times, leaving a remainder of 15.
Write down 6 as next digit of the result. 
Result so far: 84056.0
If we take 522 away from 537, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 8:
150 divided by 87 is 1 with a remainder of 63.
The number 1 becomes the next digit in our result. 
Result so far: 84056.1
Deduct 87 from 150 and we're left with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Let's proceed to step 9:
630 divided by 87 is 7 with a remainder of 21.
The next digit of our result is 7. 
Result so far: 84056.17
Subtracting 609 from 630 leaves us with 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 10:
210 divided by 87 is 2 with a remainder of 36.
Put 2 as the next digit of the answer. 
Result so far: 84056.172
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 11:
87 can be fit into 360 4 times, resulting in a remainder of 12.
Record the quotient 4 as the next digit in the result. 
Result so far: 84056.1724
If we take 348 away from 360, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 12:
87 can be fit into 120 1 times, resulting in a remainder of 33.
Put 1 as the next digit of the answer. 
Result so far: 84056.17241
If we take 87 away from 120, we end up with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Advancing to step 13:
If we divide 330 by 87, we get 3 and a remainder of 69.
Use 3 as the next digit of our solution. 
Result so far: 84056.172413
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.

Moving on to step 14:
The number 87 fits into 690 7 times, leaving a remainder of 81.
The next digit of our result is 7. 
Result so far: 84056.1724137
The remainder is 81 after subtracting 609 from 690.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Moving on to step 15:
When dividing 810 by 87, we get 9 with a remainder of 27.
Use 9 as the next digit of our solution. 
Result so far: 84056.17241379
Deduct 783 from 810 and we're left with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

In conclusion, the division gives 84056.17241379 with a balance of 2.7e-08.