515988 ÷ 4 
Our goal is to divide 515988 by 4.

Step 1:
5 divided by 4 is 1 with a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 4 from 5, we get 1.
Take the next digit (1) from the dividend and append it to 1, then repeat: 11 / 4

Going ahead to step 2:
The number 4 fits into 11 2 times, leaving a remainder of 3.
Write down 2 as next digit of the result. 
Result so far: 12.0
If we take 8 away from 11, we end up with 3.
Append the next digit (5) from the dividend to 3 and continue with: 35 / 4

On to step 3:
4 goes into 35 8 times with a remainder of 3.
The number 8 becomes the next digit in our result. 
Result so far: 128.0
Subtract 32 from 35 to get 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 4

Let's proceed to step 4:
4 can be fit into 39 9 times, resulting in a remainder of 3.
Record the quotient 9 as the next digit in the result. 
Result so far: 1289.0
If we take 36 away from 39, we end up with 3.
Grab the next digit (8) from the dividend, add it to 3, then carry on: 38 / 4

Advancing to step 5:
38 divided by 4 is 9 with a remainder of 2.
The next digit of our result is 9. 
Result so far: 12899.0
If we subtract 36 from 38, we get 2.
Bring next digit (8) of the dividend behind the 2 and repeat the process: 28 / 4

Step 6:
When dividing 28 by 4, we get 7 with a remainder of 0.
Use 7 as the next digit of our solution. 
Result so far: 128997.0
Subtract 28 from 28 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.

Going ahead to step 7:
4 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 128997.0
Deduct 0 from 0 and we're left 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.

Going ahead to step 8:
The number 4 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 128997.0
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.

The final outcome is 128997.0, with a leftover of 0.0.