508209 divided by 42 
We're looking to find how many times 42 goes into 508209.

Let's proceed to step 1:
When dividing 5 by 42, we get 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Fetch the next digit (0) from the dividend, attach it to 5 and continue: 50 / 42

Moving on to step 2:
When dividing 50 by 42, we get 1 with a remainder of 8.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 42 from 50, we get 8.
Include the next digit (8) from the dividend after 8, then repeat: 88 / 42

Moving on to step 3:
When dividing 88 by 42, we get 2 with a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
If we subtract 84 from 88, we get 4.
Fetch the next digit (2) from the dividend, attach it to 4 and continue: 42 / 42

Let's proceed to step 4:
42 can be fit into 42 1 times, resulting in a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 121.0
If we take 42 away from 42, we end up with 0.
Append the next digit (0) from the dividend to 0 and continue with: 0 / 42

Let's proceed to step 5:
42 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 1210.0
Deduct 0 from 0 and we're left with 0.
Append the next digit (9) from the dividend to 0 and continue with: 9 / 42

Going ahead to step 6:
9 divided by 42 is 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 12100.0
If we take 0 away from 9, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 7:
42 can be fit into 90 2 times, resulting in a remainder of 6.
Put 2 as the next digit of the answer. 
Result so far: 12100.2
Subtract 84 from 90 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 8:
60 divided by 42 is 1 with a remainder of 18.
Write down 1 as next digit of the result. 
Result so far: 12100.21
If we take 42 away from 60, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 9:
When dividing 180 by 42, we get 4 with a remainder of 12.
Put 4 as the next digit of the answer. 
Result so far: 12100.214
If we take 168 away from 180, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 10:
42 goes into 120 2 times with a remainder of 36.
Put 2 as the next digit of the answer. 
Result so far: 12100.2142
The remainder is 36 after subtracting 84 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 11:
The number 42 fits into 360 8 times, leaving a remainder of 24.
Use 8 as the next digit of our solution. 
Result so far: 12100.21428
Subtracting 336 from 360 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 12:
When dividing 240 by 42, we get 5 with a remainder of 30.
Write down 5 as next digit of the result. 
Result so far: 12100.214285
The remainder is 30 after subtracting 210 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 13:
The number 42 fits into 300 7 times, leaving a remainder of 6.
Put 7 as the next digit of the answer. 
Result so far: 12100.2142857
Subtract 294 from 300 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 14:
60 divided by 42 is 1 with a remainder of 18.
The number 1 becomes the next digit in our result. 
Result so far: 12100.21428571
Subtract 42 from 60 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Our division results in 12100.21428571 with a remaining 1.8e-08.