42512 ÷ 2 
We're looking to find how many times 2 goes into 42512.

Advancing to step 1:
When dividing 4 by 2, we get 2 with a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we take 4 away from 4, we end up with 0.
Include the next digit (2) from the dividend after 0, then repeat: 2 / 2

Moving on to step 2:
2 can be fit into 2 1 times, resulting in a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 21.0
Subtract 2 from 2 to get 0.
Take the next digit (5) from the dividend and append it to 0, then repeat: 5 / 2

Step 3:
The number 2 fits into 5 2 times, leaving a remainder of 1.
Use 2 as the next digit of our solution. 
Result so far: 212.0
Deduct 4 from 5 and we're left with 1.
Include the next digit (1) from the dividend after 1, then repeat: 11 / 2

Step 4:
The number 2 fits into 11 5 times, leaving a remainder of 1.
Use 5 as the next digit of our solution. 
Result so far: 2125.0
The remainder is 1 after subtracting 10 from 11.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 2

Moving on to step 5:
The number 2 fits into 12 6 times, leaving a remainder of 0.
Record the quotient 6 as the next digit in the result. 
Result so far: 21256.0
If we subtract 12 from 12, 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.

Step 6:
When dividing 0 by 2, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 21256.0
Subtract 0 from 0 to 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.

On to step 7:
If we divide 0 by 2, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 21256.0
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.

In conclusion, the division gives 21256.0 with a balance of 0.0.