3439 ÷ 5 = 687 R4
Alright, let's work through the division of 3439 by 5 step by step.

Step 1:
5 goes into 3 0 times with a remainder of 3.
Write down 0 as next digit of of the result. 
Result so far: 0
Subtract 0 from 3 to get 3.
Bring next digit (4) of the dividend behind the 3 and repeat the process: 34 / 5

Step 2:
5 goes into 34 6 times with a remainder of 4.
Write down 6 as next digit of of the result. 
Result so far: 6
Subtract 30 from 34 to get 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 5

Step 3:
5 goes into 43 8 times with a remainder of 3.
Write down 8 as next digit of of the result. 
Result so far: 68
Subtract 40 from 43 to get 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 5

Step 4:
5 goes into 39 7 times with a remainder of 4.
Write down 7 as next digit of of the result. 
Result so far: 687
Subtract 35 from 39 to get 4.

The final result is 687 with a remainder of 4.