503146 divided by 42 
We want to figure out the number of times 503146 can be divided by 42.

Advancing to step 1:
If we divide 5 by 42, we get 0 and a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Include the next digit (0) from the dividend after 5, then repeat: 50 / 42

Going ahead to step 2:
The number 42 fits into 50 1 times, leaving a remainder of 8.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 42 from 50, we get 8.
Take the next digit (3) from the dividend and append it to 8, then repeat: 83 / 42

On to step 3:
When dividing 83 by 42, we get 1 with a remainder of 41.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
Deduct 42 from 83 and we're left with 41.
Append the next digit (1) from the dividend to 41 and continue with: 411 / 42

Let's proceed to step 4:
42 goes into 411 9 times with a remainder of 33.
Record the quotient 9 as the next digit in the result. 
Result so far: 119.0
Subtract 378 from 411 to get 33.
Include the next digit (4) from the dividend after 33, then repeat: 334 / 42

Advancing to step 5:
334 divided by 42 is 7 with a remainder of 40.
The next digit of our result is 7. 
Result so far: 1197.0
If we take 294 away from 334, we end up with 40.
Append the next digit (6) from the dividend to 40 and continue with: 406 / 42

Moving on to step 6:
If we divide 406 by 42, we get 9 and a remainder of 28.
Use 9 as the next digit of our solution. 
Result so far: 11979.0
Deduct 378 from 406 and we're left 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.

Going ahead to step 7:
If we divide 280 by 42, we get 6 and a remainder of 28.
Write down 6 as next digit of the result. 
Result so far: 11979.6
The remainder is 28 after subtracting 252 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 8:
The number 42 fits into 280 6 times, leaving a remainder of 28.
The number 6 becomes the next digit in our result. 
Result so far: 11979.66
Subtracting 252 from 280 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.

In conclusion, the division gives 11979.66 with a balance of 0.028.