Help me in solving RIP2000 problem

My issue

My code

amount = input()
notes = input()
result = amount //  notes
print(result)

Problem Link: RIP2000 Problem - CodeChef

@code82
There is just one input being taken, the amount of rupees 2000 notes and we have to return its equivalent value in 500 rupees notes.

Here is my code for reference.

# cook your dish here
print(4*int(input()))