We look at the division of 15748320 by 648 
Let's see how many times 648 fits into 15748320.

Advancing to step 1:
The number 648 fits into 1 0 times, leaving a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 648

Step 2:
When dividing 15 by 648, we get 0 with a remainder of 15.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 15 and we're left with 15.
Fetch the next digit (7) from the dividend, attach it to 15 and continue: 157 / 648

On to step 3:
157 divided by 648 is 0 with a remainder of 157.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 157, we end up with 157.
Take the next digit (4) from the dividend and append it to 157, then repeat: 1574 / 648

Moving on to step 4:
When dividing 1574 by 648, we get 2 with a remainder of 278.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtracting 1296 from 1574 leaves us with 278.
Fetch the next digit (8) from the dividend, attach it to 278 and continue: 2788 / 648

Let's proceed to step 5:
2788 divided by 648 is 4 with a remainder of 196.
The number 4 becomes the next digit in our result. 
Result so far: 24.0
The remainder is 196 after subtracting 2592 from 2788.
Append the next digit (3) from the dividend to 196 and continue with: 1963 / 648

Going ahead to step 6:
1963 divided by 648 is 3 with a remainder of 19.
Use 3 as the next digit of our solution. 
Result so far: 243.0
Subtracting 1944 from 1963 leaves us with 19.
Append the next digit (2) from the dividend to 19 and continue with: 192 / 648

Going ahead to step 7:
When dividing 192 by 648, we get 0 with a remainder of 192.
Record the quotient 0 as the next digit in the result. 
Result so far: 2430.0
Subtract 0 from 192 to get 192.
Bring next digit (0) of the dividend behind the 192 and repeat the process: 1920 / 648

On to step 8:
If we divide 1920 by 648, we get 2 and a remainder of 624.
Use 2 as the next digit of our solution. 
Result so far: 24302.0
The remainder is 624 after subtracting 1296 from 1920.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6240, and continue the process.

Advancing to step 9:
648 goes into 6240 9 times with a remainder of 408.
Put 9 as the next digit of the answer. 
Result so far: 24302.9
If we take 5832 away from 6240, we end up with 408.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4080, and continue the process.

Advancing to step 10:
When dividing 4080 by 648, we get 6 with a remainder of 192.
Use 6 as the next digit of our solution. 
Result so far: 24302.96
If we subtract 3888 from 4080, we get 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

Step 11:
The number 648 fits into 1920 2 times, leaving a remainder of 624.
Use 2 as the next digit of our solution. 
Result so far: 24302.962
Subtract 1296 from 1920 to get 624.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6240, and continue the process.

On to step 12:
6240 divided by 648 is 9 with a remainder of 408.
Put 9 as the next digit of the answer. 
Result so far: 24302.9629
Subtracting 5832 from 6240 leaves us with 408.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4080, and continue the process.

Moving on to step 13:
4080 divided by 648 is 6 with a remainder of 192.
Put 6 as the next digit of the answer. 
Result so far: 24302.96296
Deduct 3888 from 4080 and we're left with 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

Advancing to step 14:
1920 divided by 648 is 2 with a remainder of 624.
Put 2 as the next digit of the answer. 
Result so far: 24302.962962
The remainder is 624 after subtracting 1296 from 1920.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6240, and continue the process.

Advancing to step 15:
The number 648 fits into 6240 9 times, leaving a remainder of 408.
The next digit of our result is 9. 
Result so far: 24302.9629629
Subtracting 5832 from 6240 leaves us with 408.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4080, and continue the process.

Let's proceed to step 16:
If we divide 4080 by 648, we get 6 and a remainder of 192.
The next digit of our result is 6. 
Result so far: 24302.96296296
If we subtract 3888 from 4080, we get 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

The quotient of the division is 24302.96296296, and the remainder is 1.92e-07.