We look at the division of 425481 by 42 
We're looking to find how many times 42 goes into 425481.

Step 1:
When dividing 4 by 42, we get 0 with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 42

On to step 2:
42 goes into 42 1 times with a remainder of 0.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 42 from 42 leaves us with 0.
Bring next digit (5) of the dividend behind the 0 and repeat the process: 5 / 42

On to step 3:
5 divided by 42 is 0 with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 10.0
Deduct 0 from 5 and we're left with 5.
Grab the next digit (4) from the dividend, add it to 5, then carry on: 54 / 42

On to step 4:
If we divide 54 by 42, we get 1 and a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 101.0
If we take 42 away from 54, we end up with 12.
Include the next digit (8) from the dividend after 12, then repeat: 128 / 42

Step 5:
42 goes into 128 3 times with a remainder of 2.
Put 3 as the next digit of the answer. 
Result so far: 1013.0
The remainder is 2 after subtracting 126 from 128.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 42

Let's proceed to step 6:
When dividing 21 by 42, we get 0 with a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 10130.0
Subtract 0 from 21 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 7:
The number 42 fits into 210 5 times, leaving a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 10130.5
If we subtract 210 from 210, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
42 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 10130.5
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 9:
42 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 10130.5
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 10130.5 with a remaining 0.0.