We look at the division of 728312 by 87 
Our goal is to divide 728312 by 87.

Step 1:
If we divide 7 by 87, we get 0 and a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 87

On to step 2:
87 can be fit into 72 0 times, resulting in a remainder of 72.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 72, we end up with 72.
Take the next digit (8) from the dividend and append it to 72, then repeat: 728 / 87

Going ahead to step 3:
87 goes into 728 8 times with a remainder of 32.
The next digit of our result is 8. 
Result so far: 8.0
Subtract 696 from 728 to get 32.
Bring next digit (3) of the dividend behind the 32 and repeat the process: 323 / 87

Advancing to step 4:
When dividing 323 by 87, we get 3 with a remainder of 62.
Record the quotient 3 as the next digit in the result. 
Result so far: 83.0
If we subtract 261 from 323, we get 62.
Take the next digit (1) from the dividend and append it to 62, then repeat: 621 / 87

On to step 5:
The number 87 fits into 621 7 times, leaving a remainder of 12.
Put 7 as the next digit of the answer. 
Result so far: 837.0
If we subtract 609 from 621, we get 12.
Include the next digit (2) from the dividend after 12, then repeat: 122 / 87

Going ahead to step 6:
87 can be fit into 122 1 times, resulting in a remainder of 35.
Record the quotient 1 as the next digit in the result. 
Result so far: 8371.0
Subtracting 87 from 122 leaves us 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.

Advancing to step 7:
When dividing 350 by 87, we get 4 with a remainder of 2.
The next digit of our result is 4. 
Result so far: 8371.4
Deduct 348 from 350 and we're left with 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 8:
When dividing 20 by 87, we get 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 8371.4
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.

On to step 9:
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: 8371.402
Deduct 174 from 200 and we're left 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.

Advancing to step 10:
87 can be fit into 260 2 times, resulting in a remainder of 86.
Put 2 as the next digit of the answer. 
Result so far: 8371.4022
Deduct 174 from 260 and we're left 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.

The quotient of the division is 8371.4022, and the remainder is 0.00086.