5239 ÷ 6 = 873 R1
Alright, let's work through the division of 5239 by 6 step by step.

Step 1:
6 goes into 5 0 times with a remainder of 5.
Write down 0 as next digit of of the result. 
Result so far: 0
Subtract 0 from 5 to get 5.
Bring next digit (2) of the dividend behind the 5 and repeat the process: 52 / 6

Step 2:
6 goes into 52 8 times with a remainder of 4.
Write down 8 as next digit of of the result. 
Result so far: 8
Subtract 48 from 52 to get 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 6

Step 3:
6 goes into 43 7 times with a remainder of 1.
Write down 7 as next digit of of the result. 
Result so far: 87
Subtract 42 from 43 to get 1.
Bring next digit (9) of the dividend behind the 1 and repeat the process: 19 / 6

Step 4:
6 goes into 19 3 times with a remainder of 1.
Write down 3 as next digit of of the result. 
Result so far: 873
Subtract 18 from 19 to get 1.

The final result is 873 with a remainder of 1.