$#doanthevu$

Code C++:

#include <bits/stdc++.h>
#define bac double 
using namespace std;
int main() 
{
    bac s = 6.123; 
    bac time = 15.532; 
    bac kk = time / 60.0;
    bac h = s / kk;
    cout<<fixed<<setprecision(4)<<h<<endl;
    return 0;
}

#include <bits/stdc++.h>
#define v velocity
#define db double
#define t time

using namespace std;

int main() {

    db s = 6.123; 
    db t = 15.532; 
       t = t / 60; 
    db v = s / time; 

    cout << fixed << setprecision(4) << v << endl;

    return 0;
}