509142 ÷ 50 
We want to figure out the number of times 509142 can be divided by 50.

Going ahead to step 1:
If we divide 5 by 50, we get 0 and a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Take the next digit (0) from the dividend and append it to 5, then repeat: 50 / 50

On to step 2:
If we divide 50 by 50, we get 1 and a remainder of 0.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 50 from 50, we get 0.
Take the next digit (9) from the dividend and append it to 0, then repeat: 9 / 50

Let's proceed to step 3:
50 can be fit into 9 0 times, resulting in a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
If we subtract 0 from 9, we get 9.
Grab the next digit (1) from the dividend, add it to 9, then carry on: 91 / 50

Let's proceed to step 4:
When dividing 91 by 50, we get 1 with a remainder of 41.
Record the quotient 1 as the next digit in the result. 
Result so far: 101.0
Subtract 50 from 91 to get 41.
Include the next digit (4) from the dividend after 41, then repeat: 414 / 50

Going ahead to step 5:
The number 50 fits into 414 8 times, leaving a remainder of 14.
The next digit of our result is 8. 
Result so far: 1018.0
The remainder is 14 after subtracting 400 from 414.
Take the next digit (2) from the dividend and append it to 14, then repeat: 142 / 50

Moving on to step 6:
142 divided by 50 is 2 with a remainder of 42.
Put 2 as the next digit of the answer. 
Result so far: 10182.0
Subtracting 100 from 142 leaves us with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Going ahead to step 7:
420 divided by 50 is 8 with a remainder of 20.
Write down 8 as next digit of the result. 
Result so far: 10182.8
The remainder is 20 after subtracting 400 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 8:
50 goes into 200 4 times with a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 10182.84
Deduct 200 from 200 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
If we divide 0 by 50, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 10182.84
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 10:
50 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 10182.84
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 10182.84, and the remainder is 0.0.