We look at the division of 518186 by 1 
Our goal is to divide 518186 by 1.

Going ahead to step 1:
1 goes into 5 5 times with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 5.0
If we take 5 away from 5, we end up with 0.
Append the next digit (1) from the dividend to 0 and continue with: 1 / 1

Moving on to step 2:
If we divide 1 by 1, we get 1 and a remainder of 0.
The next digit of our result is 1. 
Result so far: 51.0
If we take 1 away from 1, we end up with 0.
Bring next digit (8) of the dividend behind the 0 and repeat the process: 8 / 1

On to step 3:
When dividing 8 by 1, we get 8 with a remainder of 0.
The number 8 becomes the next digit in our result. 
Result so far: 518.0
Subtracting 8 from 8 leaves us with 0.
Grab the next digit (1) from the dividend, add it to 0, then carry on: 1 / 1

On to step 4:
1 divided by 1 is 1 with a remainder of 0.
Use 1 as the next digit of our solution. 
Result so far: 5181.0
If we take 1 away from 1, we end up with 0.
Bring next digit (8) of the dividend behind the 0 and repeat the process: 8 / 1

Going ahead to step 5:
8 divided by 1 is 8 with a remainder of 0.
The next digit of our result is 8. 
Result so far: 51818.0
If we take 8 away from 8, we end up with 0.
Bring next digit (6) of the dividend behind the 0 and repeat the process: 6 / 1

Advancing to step 6:
When dividing 6 by 1, we get 6 with a remainder of 0.
Record the quotient 6 as the next digit in the result. 
Result so far: 518186.0
Deduct 6 from 6 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.

Moving on to 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: 518186.0
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.

Going ahead to step 8:
The number 1 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 518186.0
If we take 0 away from 0, 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.

The final result is 518186.0 with a remainder of 0.0.