87360921 divided by 728 
Let's see how many times 728 fits into 87360921.

On to step 1:
If we divide 8 by 728, we get 0 and a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (7) from the dividend after 8, then repeat: 87 / 728

Moving on to step 2:
728 goes into 87 0 times with a remainder of 87.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 87 and we're left with 87.
Take the next digit (3) from the dividend and append it to 87, then repeat: 873 / 728

Let's proceed to step 3:
The number 728 fits into 873 1 times, leaving a remainder of 145.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 728 from 873 and we're left with 145.
Fetch the next digit (6) from the dividend, attach it to 145 and continue: 1456 / 728

Let's proceed to step 4:
If we divide 1456 by 728, we get 2 and a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 12.0
Subtracting 1456 from 1456 leaves us with 0.
Include the next digit (0) from the dividend after 0, then repeat: 0 / 728

Step 5:
0 divided by 728 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 120.0
Subtracting 0 from 0 leaves us with 0.
Take the next digit (9) from the dividend and append it to 0, then repeat: 9 / 728

Moving on to step 6:
The number 728 fits into 9 0 times, leaving a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 1200.0
Subtracting 0 from 9 leaves us with 9.
Fetch the next digit (2) from the dividend, attach it to 9 and continue: 92 / 728

Going ahead to step 7:
The number 728 fits into 92 0 times, leaving a remainder of 92.
Put 0 as the next digit of the answer. 
Result so far: 12000.0
The remainder is 92 after subtracting 0 from 92.
Append the next digit (1) from the dividend to 92 and continue with: 921 / 728

Moving on to step 8:
728 can be fit into 921 1 times, resulting in a remainder of 193.
Write down 1 as next digit of the result. 
Result so far: 120001.0
If we subtract 728 from 921, we get 193.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1930, and continue the process.

Advancing to step 9:
728 goes into 1930 2 times with a remainder of 474.
Use 2 as the next digit of our solution. 
Result so far: 120001.2
If we take 1456 away from 1930, we end up with 474.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4740, and continue the process.

Advancing to step 10:
When dividing 4740 by 728, we get 6 with a remainder of 372.
Record the quotient 6 as the next digit in the result. 
Result so far: 120001.26
Subtract 4368 from 4740 to get 372.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

Step 11:
The number 728 fits into 3720 5 times, leaving a remainder of 80.
Use 5 as the next digit of our solution. 
Result so far: 120001.265
If we subtract 3640 from 3720, 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 12:
800 divided by 728 is 1 with a remainder of 72.
Write down 1 as next digit of the result. 
Result so far: 120001.2651
Deduct 728 from 800 and we're left with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

On to step 13:
728 can be fit into 720 0 times, resulting in a remainder of 720.
Write down 0 as next digit of the result. 
Result so far: 120001.2651
If we take 0 away from 720, we end up with 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7200, and continue the process.

Let's proceed to step 14:
The number 728 fits into 7200 9 times, leaving a remainder of 648.
Use 9 as the next digit of our solution. 
Result so far: 120001.265109
Deduct 6552 from 7200 and we're left with 648.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6480, and continue the process.

Moving on to step 15:
When dividing 6480 by 728, we get 8 with a remainder of 656.
Put 8 as the next digit of the answer. 
Result so far: 120001.2651098
Deduct 5824 from 6480 and we're left with 656.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6560, and continue the process.

Moving on to step 16:
When dividing 6560 by 728, we get 9 with a remainder of 8.
Write down 9 as next digit of the result. 
Result so far: 120001.26510989
Deduct 6552 from 6560 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.

The final result is 120001.26510989 with a remainder of 8e-09.