39985 ÷ 5 = 7997 R0
Alright, let's work through the division of 39985 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 (9) of the dividend behind the 3 and repeat the process: 39 / 5

Step 2:
5 goes into 39 7 times with a remainder of 4.
Write down 7 as next digit of of the result. 
Result so far: 7
Subtract 35 from 39 to get 4.
Bring next digit (9) of the dividend behind the 4 and repeat the process: 49 / 5

Step 3:
5 goes into 49 9 times with a remainder of 4.
Write down 9 as next digit of of the result. 
Result so far: 79
Subtract 45 from 49 to get 4.
Bring next digit (8) of the dividend behind the 4 and repeat the process: 48 / 5

Step 4:
5 goes into 48 9 times with a remainder of 3.
Write down 9 as next digit of of the result. 
Result so far: 799
Subtract 45 from 48 to get 3.
Bring next digit (5) of the dividend behind the 3 and repeat the process: 35 / 5

Step 5:
5 goes into 35 7 times with a remainder of 0.
Write down 7 as next digit of of the result. 
Result so far: 7997
Subtract 35 from 35 to get 0.

The final result is 7997 with a remainder of 0.