We divide 15390660 by 720
Let's see how many times 720 fits into 15390660.

Going ahead to step 1:
The number 720 fits into 1 0 times, leaving a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 720

Let's proceed to step 2:
If we divide 15 by 720, we get 0 and a remainder of 15.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 15 and we're left with 15.
Include the next digit (3) from the dividend after 15, then repeat: 153 / 720

Advancing to step 3:
720 goes into 153 0 times with a remainder of 153.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 153 after subtracting 0 from 153.
Take the next digit (9) from the dividend and append it to 153, then repeat: 1539 / 720

Moving on to step 4:
The number 720 fits into 1539 2 times, leaving a remainder of 99.
The next digit of our result is 2. 
Result so far: 2.0
The remainder is 99 after subtracting 1440 from 1539.
Grab the next digit (0) from the dividend, add it to 99, then carry on: 990 / 720

Step 5:
The number 720 fits into 990 1 times, leaving a remainder of 270.
Record the quotient 1 as the next digit in the result. 
Result so far: 21.0
Subtract 720 from 990 to get 270.
Grab the next digit (6) from the dividend, add it to 270, then carry on: 2706 / 720

Step 6:
When dividing 2706 by 720, we get 3 with a remainder of 546.
The number 3 becomes the next digit in our result. 
Result so far: 213.0
If we take 2160 away from 2706, we end up with 546.
Grab the next digit (6) from the dividend, add it to 546, then carry on: 5466 / 720

Step 7:
720 can be fit into 5466 7 times, resulting in a remainder of 426.
Write down 7 as next digit of the result. 
Result so far: 2137.0
If we subtract 5040 from 5466, we get 426.
Grab the next digit (0) from the dividend, add it to 426, then carry on: 4260 / 720

Moving on to step 8:
4260 divided by 720 is 5 with a remainder of 660.
Use 5 as the next digit of our solution. 
Result so far: 21375.0
The remainder is 660 after subtracting 3600 from 4260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6600, and continue the process.

Step 9:
If we divide 6600 by 720, we get 9 and a remainder of 120.
Put 9 as the next digit of the answer. 
Result so far: 21375.9
The remainder is 120 after subtracting 6480 from 6600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Advancing to step 10:
720 can be fit into 1200 1 times, resulting in a remainder of 480.
The number 1 becomes the next digit in our result. 
Result so far: 21375.91
Subtract 720 from 1200 to get 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Let's proceed to step 11:
720 goes into 4800 6 times with a remainder of 480.
Record the quotient 6 as the next digit in the result. 
Result so far: 21375.916
Subtracting 4320 from 4800 leaves us with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Moving on to step 12:
720 goes into 4800 6 times with a remainder of 480.
Put 6 as the next digit of the answer. 
Result so far: 21375.9166
If we take 4320 away from 4800, we end up with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Our division results in 21375.9166 with a remaining 0.0048.