Help me in solving CPPFALL116 problem

My issue

I can’t understand

My code

// Complete the code below
#include <bits/stdc++.h>

using namespace std;

int main() {

    int mile;
    int km;
    km >> mile;
    km = 1.60 * mile;
    cout << km;
    cout << " mile";
}

Learning course: Learn Programming and Problem Solving using C++
Problem Link: https://www.codechef.com/learn/course/sit-cpp-fall/SITFALL20/problems/CPPFALL116