492581 ÷ 42 
We want to figure out the number of times 492581 can be divided by 42.

Step 1:
4 divided by 42 is 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Include the next digit (9) from the dividend after 4, then repeat: 49 / 42

Moving on to step 2:
49 divided by 42 is 1 with a remainder of 7.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 42 from 49, we get 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 42

Going ahead to step 3:
The number 42 fits into 72 1 times, leaving a remainder of 30.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
Subtract 42 from 72 to get 30.
Append the next digit (5) from the dividend to 30 and continue with: 305 / 42

Let's proceed to step 4:
The number 42 fits into 305 7 times, leaving a remainder of 11.
Put 7 as the next digit of the answer. 
Result so far: 117.0
Subtracting 294 from 305 leaves us with 11.
Fetch the next digit (8) from the dividend, attach it to 11 and continue: 118 / 42

On to step 5:
When dividing 118 by 42, we get 2 with a remainder of 34.
Record the quotient 2 as the next digit in the result. 
Result so far: 1172.0
Subtracting 84 from 118 leaves us with 34.
Grab the next digit (1) from the dividend, add it to 34, then carry on: 341 / 42

Let's proceed to step 6:
If we divide 341 by 42, we get 8 and a remainder of 5.
Write down 8 as next digit of the result. 
Result so far: 11728.0
Subtracting 336 from 341 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 7:
If we divide 50 by 42, we get 1 and a remainder of 8.
The next digit of our result is 1. 
Result so far: 11728.1
If we take 42 away from 50, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 8:
The number 42 fits into 80 1 times, leaving a remainder of 38.
Put 1 as the next digit of the answer. 
Result so far: 11728.11
Subtracting 42 from 80 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Our division results in 11728.11 with a remaining 0.038.