87531 divided by 86 
Let's see how many times 86 fits into 87531.

Advancing to step 1:
When dividing 8 by 86, we get 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Include the next digit (7) from the dividend after 8, then repeat: 87 / 86

Going ahead to step 2:
87 divided by 86 is 1 with a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 86 from 87, we get 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 86

Advancing to step 3:
If we divide 15 by 86, we get 0 and a remainder of 15.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
The remainder is 15 after subtracting 0 from 15.
Take the next digit (3) from the dividend and append it to 15, then repeat: 153 / 86

On to step 4:
86 can be fit into 153 1 times, resulting in a remainder of 67.
The next digit of our result is 1. 
Result so far: 101.0
Deduct 86 from 153 and we're left with 67.
Bring next digit (1) of the dividend behind the 67 and repeat the process: 671 / 86

Advancing to step 5:
If we divide 671 by 86, we get 7 and a remainder of 69.
Put 7 as the next digit of the answer. 
Result so far: 1017.0
If we subtract 602 from 671, we get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Going ahead to step 6:
86 can be fit into 690 8 times, resulting in a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 1017.8
If we subtract 688 from 690, 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.

Step 7:
The number 86 fits into 20 0 times, leaving a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 1017.8
Subtracting 0 from 20 leaves us 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 8:
200 divided by 86 is 2 with a remainder of 28.
The number 2 becomes the next digit in our result. 
Result so far: 1017.802
Subtract 172 from 200 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 9:
If we divide 280 by 86, we get 3 and a remainder of 22.
The next digit of our result is 3. 
Result so far: 1017.8023
Deduct 258 from 280 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 10:
86 can be fit into 220 2 times, resulting in a remainder of 48.
Put 2 as the next digit of the answer. 
Result so far: 1017.80232
The remainder is 48 after subtracting 172 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 11:
86 can be fit into 480 5 times, resulting in a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 1017.802325
If we take 430 away from 480, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 12:
86 goes into 500 5 times with a remainder of 70.
The next digit of our result is 5. 
Result so far: 1017.8023255
Subtract 430 from 500 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

In conclusion, the division gives 1017.8023255 with a balance of 7e-07.