512493 ÷ 1 
We're looking to find how many times 1 goes into 512493.

Step 1:
5 divided by 1 is 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Deduct 5 from 5 and we're left with 0.
Include the next digit (1) from the dividend after 0, then repeat: 1 / 1

Step 2:
The number 1 fits into 1 1 times, leaving a remainder of 0.
Use 1 as the next digit of our solution. 
Result so far: 51.0
Subtract 1 from 1 to get 0.
Take the next digit (2) from the dividend and append it to 0, then repeat: 2 / 1

Let's proceed to step 3:
2 divided by 1 is 2 with a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 512.0
Deduct 2 from 2 and we're left with 0.
Bring next digit (4) of the dividend behind the 0 and repeat the process: 4 / 1

Going ahead to step 4:
4 divided by 1 is 4 with a remainder of 0.
Use 4 as the next digit of our solution. 
Result so far: 5124.0
Subtract 4 from 4 to get 0.
Grab the next digit (9) from the dividend, add it to 0, then carry on: 9 / 1

Going ahead to step 5:
If we divide 9 by 1, we get 9 and a remainder of 0.
Write down 9 as next digit of the result. 
Result so far: 51249.0
Deduct 9 from 9 and we're left with 0.
Include the next digit (3) from the dividend after 0, then repeat: 3 / 1

Let's proceed to step 6:
1 goes into 3 3 times with a remainder of 0.
Put 3 as the next digit of the answer. 
Result so far: 512493.0
If we take 3 away from 3, we end up with 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 7:
If we divide 0 by 1, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 512493.0
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.

Let's proceed to step 8:
1 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 512493.0
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.

Our division results in 512493.0 with a remaining 0.0.