396191 divided by 42 
We want to divide 396191 by 42.

Advancing to step 1:
42 goes into 3 0 times with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 42

Moving on to step 2:
When dividing 39 by 42, we get 0 with a remainder of 39.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 39, we end up with 39.
Grab the next digit (6) from the dividend, add it to 39, then carry on: 396 / 42

On to step 3:
The number 42 fits into 396 9 times, leaving a remainder of 18.
The next digit of our result is 9. 
Result so far: 9.0
Deduct 378 from 396 and we're left with 18.
Take the next digit (1) from the dividend and append it to 18, then repeat: 181 / 42

Step 4:
The number 42 fits into 181 4 times, leaving a remainder of 13.
The number 4 becomes the next digit in our result. 
Result so far: 94.0
If we subtract 168 from 181, we get 13.
Bring next digit (9) of the dividend behind the 13 and repeat the process: 139 / 42

Going ahead to step 5:
When dividing 139 by 42, we get 3 with a remainder of 13.
Write down 3 as next digit of the result. 
Result so far: 943.0
Subtract 126 from 139 to get 13.
Take the next digit (1) from the dividend and append it to 13, then repeat: 131 / 42

Let's proceed to step 6:
42 can be fit into 131 3 times, resulting in a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 9433.0
Subtracting 126 from 131 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.

On to step 7:
When dividing 50 by 42, we get 1 with a remainder of 8.
Use 1 as the next digit of our solution. 
Result so far: 9433.1
The remainder is 8 after subtracting 42 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 8:
If we divide 80 by 42, we get 1 and a remainder of 38.
Record the quotient 1 as the next digit in the result. 
Result so far: 9433.11
Deduct 42 from 80 and we're left 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 9433.11 with a remaining 0.038.