We're dividing 42455 by 15 
Let's see how many times 15 fits into 42455.

Moving on to step 1:
15 goes into 4 0 times with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Fetch the next digit (2) from the dividend, attach it to 4 and continue: 42 / 15

On to step 2:
15 can be fit into 42 2 times, resulting in a remainder of 12.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtracting 30 from 42 leaves us with 12.
Fetch the next digit (4) from the dividend, attach it to 12 and continue: 124 / 15

Advancing to step 3:
The number 15 fits into 124 8 times, leaving a remainder of 4.
The next digit of our result is 8. 
Result so far: 28.0
Deduct 120 from 124 and we're left with 4.
Take the next digit (5) from the dividend and append it to 4, then repeat: 45 / 15

On to step 4:
If we divide 45 by 15, we get 3 and a remainder of 0.
Use 3 as the next digit of our solution. 
Result so far: 283.0
Subtract 45 from 45 to get 0.
Bring next digit (5) of the dividend behind the 0 and repeat the process: 5 / 15

Step 5:
When dividing 5 by 15, we get 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 2830.0
The remainder is 5 after subtracting 0 from 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 6:
The number 15 fits into 50 3 times, leaving a remainder of 5.
Put 3 as the next digit of the answer. 
Result so far: 2830.3
Deduct 45 from 50 and we're left 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.

Advancing to step 7:
50 divided by 15 is 3 with a remainder of 5.
Use 3 as the next digit of our solution. 
Result so far: 2830.33
Subtracting 45 from 50 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.

The quotient of the division is 2830.33, and the remainder is 0.005.