49807109 divided by 648 
Our goal is to divide 49807109 by 648.

Advancing to step 1:
If we divide 4 by 648, we get 0 and a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Fetch the next digit (9) from the dividend, attach it to 4 and continue: 49 / 648

Moving on to step 2:
648 can be fit into 49 0 times, resulting in a remainder of 49.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 49, we get 49.
Fetch the next digit (8) from the dividend, attach it to 49 and continue: 498 / 648

On to step 3:
648 goes into 498 0 times with a remainder of 498.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 498 to get 498.
Take the next digit (0) from the dividend and append it to 498, then repeat: 4980 / 648

Let's proceed to step 4:
648 can be fit into 4980 7 times, resulting in a remainder of 444.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we subtract 4536 from 4980, we get 444.
Bring next digit (7) of the dividend behind the 444 and repeat the process: 4447 / 648

Let's proceed to step 5:
648 can be fit into 4447 6 times, resulting in a remainder of 559.
Use 6 as the next digit of our solution. 
Result so far: 76.0
Subtracting 3888 from 4447 leaves us with 559.
Fetch the next digit (1) from the dividend, attach it to 559 and continue: 5591 / 648

Going ahead to step 6:
5591 divided by 648 is 8 with a remainder of 407.
The number 8 becomes the next digit in our result. 
Result so far: 768.0
Subtract 5184 from 5591 to get 407.
Grab the next digit (0) from the dividend, add it to 407, then carry on: 4070 / 648

Advancing to step 7:
4070 divided by 648 is 6 with a remainder of 182.
Put 6 as the next digit of the answer. 
Result so far: 7686.0
Deduct 3888 from 4070 and we're left with 182.
Include the next digit (9) from the dividend after 182, then repeat: 1829 / 648

Going ahead to step 8:
648 can be fit into 1829 2 times, resulting in a remainder of 533.
The next digit of our result is 2. 
Result so far: 76862.0
Deduct 1296 from 1829 and we're left with 533.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5330, and continue the process.

Moving on to step 9:
If we divide 5330 by 648, we get 8 and a remainder of 146.
Write down 8 as next digit of the result. 
Result so far: 76862.8
If we take 5184 away from 5330, we end up with 146.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1460, and continue the process.

Moving on to step 10:
If we divide 1460 by 648, we get 2 and a remainder of 164.
Write down 2 as next digit of the result. 
Result so far: 76862.82
Subtract 1296 from 1460 to get 164.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

Moving on to step 11:
If we divide 1640 by 648, we get 2 and a remainder of 344.
Write down 2 as next digit of the result. 
Result so far: 76862.822
Subtract 1296 from 1640 to get 344.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

The final outcome is 76862.822, with a leftover of 0.0344.