We look at the division of 50131907 by 642 
We want to divide 50131907 by 642.

Moving on to step 1:
5 divided by 642 is 0 with 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.
Include the next digit (0) from the dividend after 5, then repeat: 50 / 642

Moving on to step 2:
50 divided by 642 is 0 with a remainder of 50.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 50, we get 50.
Bring next digit (1) of the dividend behind the 50 and repeat the process: 501 / 642

Moving on to step 3:
642 can be fit into 501 0 times, resulting in a remainder of 501.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 501, we end up with 501.
Bring next digit (3) of the dividend behind the 501 and repeat the process: 5013 / 642

Let's proceed to step 4:
When dividing 5013 by 642, we get 7 with a remainder of 519.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Subtracting 4494 from 5013 leaves us with 519.
Grab the next digit (1) from the dividend, add it to 519, then carry on: 5191 / 642

Let's proceed to step 5:
642 can be fit into 5191 8 times, resulting in a remainder of 55.
The next digit of our result is 8. 
Result so far: 78.0
Subtract 5136 from 5191 to get 55.
Grab the next digit (9) from the dividend, add it to 55, then carry on: 559 / 642

On to step 6:
When dividing 559 by 642, we get 0 with a remainder of 559.
Record the quotient 0 as the next digit in the result. 
Result so far: 780.0
Deduct 0 from 559 and we're left with 559.
Take the next digit (0) from the dividend and append it to 559, then repeat: 5590 / 642

Advancing to step 7:
When dividing 5590 by 642, we get 8 with a remainder of 454.
Use 8 as the next digit of our solution. 
Result so far: 7808.0
If we take 5136 away from 5590, we end up with 454.
Fetch the next digit (7) from the dividend, attach it to 454 and continue: 4547 / 642

Moving on to step 8:
4547 divided by 642 is 7 with a remainder of 53.
Put 7 as the next digit of the answer. 
Result so far: 78087.0
Subtract 4494 from 4547 to get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Step 9:
When dividing 530 by 642, we get 0 with a remainder of 530.
The next digit of our result is 0. 
Result so far: 78087.0
Subtract 0 from 530 to get 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5300, and continue the process.

Step 10:
642 can be fit into 5300 8 times, resulting in a remainder of 164.
Record the quotient 8 as the next digit in the result. 
Result so far: 78087.08
If we subtract 5136 from 5300, we 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.

Let's proceed to step 11:
If we divide 1640 by 642, we get 2 and a remainder of 356.
Use 2 as the next digit of our solution. 
Result so far: 78087.082
The remainder is 356 after subtracting 1284 from 1640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3560, and continue the process.

Moving on to step 12:
3560 divided by 642 is 5 with a remainder of 350.
The next digit of our result is 5. 
Result so far: 78087.0825
Subtracting 3210 from 3560 leaves us with 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Step 13:
The number 642 fits into 3500 5 times, leaving a remainder of 290.
Record the quotient 5 as the next digit in the result. 
Result so far: 78087.08255
Deduct 3210 from 3500 and we're left with 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

After the division, we end up with 78087.08255 and a remainder of 0.00029.