We're dividing 906409 by 42 
Our goal is to divide 906409 by 42.

Advancing to step 1:
If we divide 9 by 42, we get 0 and a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Take the next digit (0) from the dividend and append it to 9, then repeat: 90 / 42

Advancing to step 2:
90 divided by 42 is 2 with a remainder of 6.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Deduct 84 from 90 and we're left with 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 42

Step 3:
The number 42 fits into 66 1 times, leaving a remainder of 24.
Use 1 as the next digit of our solution. 
Result so far: 21.0
Subtracting 42 from 66 leaves us with 24.
Append the next digit (4) from the dividend to 24 and continue with: 244 / 42

Step 4:
The number 42 fits into 244 5 times, leaving a remainder of 34.
Write down 5 as next digit of the result. 
Result so far: 215.0
The remainder is 34 after subtracting 210 from 244.
Append the next digit (0) from the dividend to 34 and continue with: 340 / 42

Step 5:
340 divided by 42 is 8 with a remainder of 4.
Record the quotient 8 as the next digit in the result. 
Result so far: 2158.0
If we subtract 336 from 340, we get 4.
Fetch the next digit (9) from the dividend, attach it to 4 and continue: 49 / 42

Moving on to step 6:
49 divided by 42 is 1 with a remainder of 7.
Write down 1 as next digit of the result. 
Result so far: 21581.0
The remainder is 7 after subtracting 42 from 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 7:
The number 42 fits into 70 1 times, leaving a remainder of 28.
Write down 1 as next digit of the result. 
Result so far: 21581.1
The remainder is 28 after subtracting 42 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 8:
280 divided by 42 is 6 with a remainder of 28.
Put 6 as the next digit of the answer. 
Result so far: 21581.16
Subtract 252 from 280 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 9:
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: 21581.166
If we take 252 away from 280, we end up 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.

After the division, we end up with 21581.166 and a remainder of 0.0028.