511 ÷ 1 = 511 R0
No problem, we've got 511 and 1 for the division.

Step 1:
1 goes into 5 5 times with a remainder of 0.
Write down 5 as next digit of of the result. 
Result so far: 5
Subtract 5 from 5 to get 0.
Bring next digit (1) of the dividend behind the 0 and repeat the process: 1 / 1

Step 2:
1 goes into 1 1 times with a remainder of 0.
Write down 1 as next digit of of the result. 
Result so far: 51
Subtract 1 from 1 to get 0.
Bring next digit (1) of the dividend behind the 0 and repeat the process: 1 / 1

Step 3:
1 goes into 1 1 times with a remainder of 0.
Write down 1 as next digit of of the result. 
Result so far: 511
Subtract 1 from 1 to get 0.

The final result is 511 with a remainder of 0.