30487933 ÷ 648 
Our goal is to divide 30487933 by 648.

Advancing to step 1:
The number 648 fits into 3 0 times, leaving a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 648

Going ahead to step 2:
648 goes into 30 0 times with a remainder of 30.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 30 and we're left with 30.
Fetch the next digit (4) from the dividend, attach it to 30 and continue: 304 / 648

Let's proceed to step 3:
If we divide 304 by 648, we get 0 and a remainder of 304.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 304 to get 304.
Bring next digit (8) of the dividend behind the 304 and repeat the process: 3048 / 648

Step 4:
If we divide 3048 by 648, we get 4 and a remainder of 456.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we subtract 2592 from 3048, we get 456.
Include the next digit (7) from the dividend after 456, then repeat: 4567 / 648

On to step 5:
648 goes into 4567 7 times with a remainder of 31.
The number 7 becomes the next digit in our result. 
Result so far: 47.0
If we take 4536 away from 4567, we end up with 31.
Take the next digit (9) from the dividend and append it to 31, then repeat: 319 / 648

Going ahead to step 6:
The number 648 fits into 319 0 times, leaving a remainder of 319.
Write down 0 as next digit of the result. 
Result so far: 470.0
If we take 0 away from 319, we end up with 319.
Take the next digit (3) from the dividend and append it to 319, then repeat: 3193 / 648

Going ahead to step 7:
3193 divided by 648 is 4 with a remainder of 601.
Put 4 as the next digit of the answer. 
Result so far: 4704.0
The remainder is 601 after subtracting 2592 from 3193.
Bring next digit (3) of the dividend behind the 601 and repeat the process: 6013 / 648

Going ahead to step 8:
If we divide 6013 by 648, we get 9 and a remainder of 181.
Record the quotient 9 as the next digit in the result. 
Result so far: 47049.0
Subtracting 5832 from 6013 leaves us with 181.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1810, and continue the process.

Advancing to step 9:
1810 divided by 648 is 2 with a remainder of 514.
The next digit of our result is 2. 
Result so far: 47049.2
Subtract 1296 from 1810 to get 514.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5140, and continue the process.

Going ahead to step 10:
If we divide 5140 by 648, we get 7 and a remainder of 604.
Record the quotient 7 as the next digit in the result. 
Result so far: 47049.27
The remainder is 604 after subtracting 4536 from 5140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6040, and continue the process.

Let's proceed to step 11:
648 goes into 6040 9 times with a remainder of 208.
Write down 9 as next digit of the result. 
Result so far: 47049.279
The remainder is 208 after subtracting 5832 from 6040.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

Moving on to step 12:
When dividing 2080 by 648, we get 3 with a remainder of 136.
Put 3 as the next digit of the answer. 
Result so far: 47049.2793
Subtracting 1944 from 2080 leaves us with 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Step 13:
648 goes into 1360 2 times with a remainder of 64.
The next digit of our result is 2. 
Result so far: 47049.27932
If we subtract 1296 from 1360, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

On to step 14:
The number 648 fits into 640 0 times, leaving a remainder of 640.
Use 0 as the next digit of our solution. 
Result so far: 47049.27932
Subtracting 0 from 640 leaves us with 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Moving on to step 15:
When dividing 6400 by 648, we get 9 with a remainder of 568.
Use 9 as the next digit of our solution. 
Result so far: 47049.2793209
Subtracting 5832 from 6400 leaves us with 568.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5680, and continue the process.

Advancing to step 16:
648 goes into 5680 8 times with a remainder of 496.
Write down 8 as next digit of the result. 
Result so far: 47049.27932098
If we take 5184 away from 5680, we end up with 496.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4960, and continue the process.

Our division results in 47049.27932098 with a remaining 4.96e-07.