50138816 divided by 644 
Our goal is to divide 50138816 by 644.

Going ahead to step 1:
644 can be fit into 5 0 times, resulting in a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Grab the next digit (0) from the dividend, add it to 5, then carry on: 50 / 644

On to step 2:
The number 644 fits into 50 0 times, leaving a remainder of 50.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 50 to get 50.
Append the next digit (1) from the dividend to 50 and continue with: 501 / 644

Moving on to step 3:
644 goes into 501 0 times with a remainder of 501.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 501 after subtracting 0 from 501.
Grab the next digit (3) from the dividend, add it to 501, then carry on: 5013 / 644

Advancing to step 4:
The number 644 fits into 5013 7 times, leaving a remainder of 505.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Subtract 4508 from 5013 to get 505.
Grab the next digit (8) from the dividend, add it to 505, then carry on: 5058 / 644

Going ahead to step 5:
5058 divided by 644 is 7 with a remainder of 550.
Use 7 as the next digit of our solution. 
Result so far: 77.0
If we take 4508 away from 5058, we end up with 550.
Bring next digit (8) of the dividend behind the 550 and repeat the process: 5508 / 644

Let's proceed to step 6:
5508 divided by 644 is 8 with a remainder of 356.
Use 8 as the next digit of our solution. 
Result so far: 778.0
If we subtract 5152 from 5508, we get 356.
Fetch the next digit (1) from the dividend, attach it to 356 and continue: 3561 / 644

On to step 7:
644 goes into 3561 5 times with a remainder of 341.
Record the quotient 5 as the next digit in the result. 
Result so far: 7785.0
Deduct 3220 from 3561 and we're left with 341.
Bring next digit (6) of the dividend behind the 341 and repeat the process: 3416 / 644

On to step 8:
644 can be fit into 3416 5 times, resulting in a remainder of 196.
The number 5 becomes the next digit in our result. 
Result so far: 77855.0
Subtract 3220 from 3416 to get 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

Moving on to step 9:
When dividing 1960 by 644, we get 3 with a remainder of 28.
Use 3 as the next digit of our solution. 
Result so far: 77855.3
Subtracting 1932 from 1960 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 10:
644 can be fit into 280 0 times, resulting in a remainder of 280.
Put 0 as the next digit of the answer. 
Result so far: 77855.3
Subtracting 0 from 280 leaves us with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Step 11:
644 can be fit into 2800 4 times, resulting in a remainder of 224.
Use 4 as the next digit of our solution. 
Result so far: 77855.304
If we subtract 2576 from 2800, we get 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Let's proceed to step 12:
The number 644 fits into 2240 3 times, leaving a remainder of 308.
Record the quotient 3 as the next digit in the result. 
Result so far: 77855.3043
Subtract 1932 from 2240 to get 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

Advancing to step 13:
When dividing 3080 by 644, we get 4 with a remainder of 504.
Write down 4 as next digit of the result. 
Result so far: 77855.30434
The remainder is 504 after subtracting 2576 from 3080.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5040, and continue the process.

Going ahead to step 14:
The number 644 fits into 5040 7 times, leaving a remainder of 532.
The next digit of our result is 7. 
Result so far: 77855.304347
The remainder is 532 after subtracting 4508 from 5040.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5320, and continue the process.

Let's proceed to step 15:
644 can be fit into 5320 8 times, resulting in a remainder of 168.
Use 8 as the next digit of our solution. 
Result so far: 77855.3043478
If we subtract 5152 from 5320, we get 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Advancing to step 16:
644 goes into 1680 2 times with a remainder of 392.
The next digit of our result is 2. 
Result so far: 77855.30434782
If we subtract 1288 from 1680, we get 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

The quotient of the division is 77855.30434782, and the remainder is 3.92e-07.