We look at the division of 518751 by 7 
Let's see how many times 7 fits into 518751.

Advancing to step 1:
If we divide 5 by 7, we get 0 and a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 7

Going ahead to step 2:
The number 7 fits into 51 7 times, leaving a remainder of 2.
The next digit of our result is 7. 
Result so far: 7.0
If we subtract 49 from 51, we get 2.
Fetch the next digit (8) from the dividend, attach it to 2 and continue: 28 / 7

Moving on to step 3:
The number 7 fits into 28 4 times, leaving a remainder of 0.
Write down 4 as next digit of the result. 
Result so far: 74.0
The remainder is 0 after subtracting 28 from 28.
Append the next digit (7) from the dividend to 0 and continue with: 7 / 7

Moving on to step 4:
7 goes into 7 1 times with a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 741.0
Deduct 7 from 7 and we're left with 0.
Fetch the next digit (5) from the dividend, attach it to 0 and continue: 5 / 7

On to step 5:
5 divided by 7 is 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 7410.0
Subtract 0 from 5 to get 5.
Take the next digit (1) from the dividend and append it to 5, then repeat: 51 / 7

Advancing to step 6:
7 can be fit into 51 7 times, resulting in a remainder of 2.
The next digit of our result is 7. 
Result so far: 74107.0
If we take 49 away from 51, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 7:
7 can be fit into 20 2 times, resulting in a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 74107.2
Subtract 14 from 20 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 8:
7 goes into 60 8 times with a remainder of 4.
Record the quotient 8 as the next digit in the result. 
Result so far: 74107.28
If we take 56 away from 60, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 9:
If we divide 40 by 7, we get 5 and a remainder of 5.
The next digit of our result is 5. 
Result so far: 74107.285
If we take 35 away from 40, we end up 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 10:
50 divided by 7 is 7 with a remainder of 1.
Use 7 as the next digit of our solution. 
Result so far: 74107.2857
If we subtract 49 from 50, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 11:
The number 7 fits into 10 1 times, leaving a remainder of 3.
The next digit of our result is 1. 
Result so far: 74107.28571
Subtract 7 from 10 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 12:
7 can be fit into 30 4 times, resulting in a remainder of 2.
The next digit of our result is 4. 
Result so far: 74107.285714
If we take 28 away from 30, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 13:
20 divided by 7 is 2 with a remainder of 6.
The next digit of our result is 2. 
Result so far: 74107.2857142
If we take 14 away from 20, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 14:
7 can be fit into 60 8 times, resulting in a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 74107.28571428
Subtracting 56 from 60 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final outcome is 74107.28571428, with a leftover of 4e-09.