Go: package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
	"strings"
)

var sc = bufio.NewScanner(os.Stdin)

//Sliceconvtof ...
func Sliceconvtof() []float64 {
	strs := strings.Split(sc.Text(), " ")

	var flts []float64
	var x int

	for _, s := range strs {
		x, _ = strconv.Atoi(s)
		xf := float64(x)
		flts = append(flts, xf)
	}

	return flts
}

func main() {

	for sc.Scan() {
		i := Sliceconvtof()
		fmt.Printf("%6f", i[0]*i[1]/3.305785)
	}

}

C++: #include <iostream>
#include <iomanip>
using namespace std;

int main() {
	double a,b; cin >> a >> b ;
	double ans=a*b/3.305785;
	cout << fixed << setprecision(6) << ans << '\n' ;
}

C++: //

#include <stdio.h>
#include <stdlib.h>
#include <iostream>
#include <vector>
#include <string>
#include <queue>
#include <algorithm>
#include <math.h>
#include <utility>
#include <set>
#include <map>
#define INF 100000
#define rep(i,n) for(int i =0;i<n;i++)
using namespace std;
typedef long long int ll;

#define MAX 5000


int main(){
    double a,b;
    cin >>a>>b;
    double ans = (a*b*1000000)/3305785;
    printf("%.5f",ans);
    cout <<endl;
}

C++: #include <iostream>
using namespace std;

int main() {
  int a, b;
  cin >> a >> b;
  cout.setf(ios::fixed);
  cout.precision(6);
  cout << a*b/3.305785 << endl;
  return 0;
}

C++: #include<iostream>
#include<cstdio>
using namespace std;
int main(){

  double a,b;
  cin >> a >> b;
  printf("%.7lf\n",a*b/3.305785);
  return (0);
}

C++: #include <vector>
#include <map>
#include <set>
#include <stack>
#include <queue>
#include <algorithm>
#include <numeric>
#include <utility>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cmath>
#include <string>
#include <cstring>
#include <complex>
#include <ctime>
#include <cstdlib>

using namespace std;

inline int to_int(string s) {int v; istringstream sin(s); sin >> v; return v;}
template<class T> inline string to_str(T x) {ostringstream sout; sout << x; return sout.str();}

typedef long long ll;

int main()
{
	double a, b;

	cin >> a >> b;

	printf("%5f\n" ,(a*b)/3.305785);
}

C++: #include<iostream>
#include<cstdio>
using namespace std;
int main(){
long a,b;
cin>>a>>b;
printf("%.4f\n",a*b/3.305785);
return 0;
}

C++: #include <iostream>
#include <iomanip>
using namespace std;
int main(void){
 int a,b;
 
  cin>>a>>b;
  
  cout<<flush;
  cout<<fixed<< setprecision(6);
  cout<<(double)a*(double)b/3.305785<<endl;
  
}

C++: #include<iostream>
using namespace std;
int main() {
	double a = 0;
	double b = 0;
	double c = 0;
	cin >> a >> b;
	c = a * b;
	c = c / 3.305785;
	printf("%f\n", c);

	return 0;

}

C++: #include<iostream>
#include<algorithm>
#include<vector>
#include<stdio.h>
using namespace std;
int main(){
	double  a,b;
	cin>>a>>b;
	printf("%f\n",a*b/3.305785);
	return 0;
}

C++: #include <bits/stdc++.h>

using namespace std;
using ll = long long;
using pii = pair<int, int>;

int main() {
  cin.tie(0);
  ios_base::sync_with_stdio(false);
  cout << fixed << setprecision(10);
  
  int a, b;
  cin >> a >> b;
  cout << a * b / 3.305785 << endl;

  return 0;
}

C++: #include <algorithm>
#include <iomanip>
#include <iostream>
#include <vector>

using namespace std;

typedef long long ll;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int, int> pii;

#define reps(i,f,n) for(int i=f; i<int(n); ++i)
#define rep(i,n) reps(i,0,n)


int main()
{
    int a, b;
    cin >> a >> b;
    cout << setprecision(15) << a*b/3.305785 << endl;
}

C++: #include <sstream>
#include <string>
#include <vector>
#include <map>
#include <algorithm>
#include <iostream>
#include <utility>
#include <set>
#include <cctype>
#include <queue>
#include <stack>
#include <cstdio>
#include <cstdlib>
#include <cmath>
using namespace std;
#define INF 100000000
typedef long long ll;

int main(void) {
    double a, b;
    cin >> a >> b;
    printf("%.7f\n", a*b/3.305785);
    return 0;
}

C++: #include <cstdio>

int main(){
	int a,b; 
	scanf("%d%d", &a, &b);
	printf("%.9f\n", a*b/3.305785);
}

C++: #include<stdio.h>

int main(){
	
	int x,y;
	
	scanf("%d %d",&x,&y);
	
	printf("%f\n",(double)(x*y/3.305785));
return 0;
}

C++: #include <iostream>

using namespace std;

int main()
{
	int a, b;
	
	cin >> a >> b;	
	cout << a * b / 3.305785 << endl;
	
	return (0);
}

C++: #include <iostream>
using namespace std;

int main(){
	int a,b;
	cin >> a >> b;
	cout << a*b/3.305785 << endl;
	return 0;
}

C++: #include <iostream>
using namespace std;
int main(){
int a,b;
double c;
cin>>a>>b;
c=a*b/3.305785;
cout<<c<<endl;
return 0;
}

C++: #include <bits/stdc++.h>
using namespace std;
int main(){
	double a,b,c=3.305785;
	cin>>a>>b;
	printf("%.10f\n",a*b/c);
}

C++: #include <iostream>
#include <cstdio>
using namespace std;
#define tubo 3.305785
 
double ans(int a , int b ){
  double res;
 
  res = (a*b)/tubo;
 
  return res;
}
 
int main(void){
  int a,b;
 
  cin >> a >> b;
  printf("%.6f\n" ,ans(a,b));
 
  return 0;
}

C++: #include <iostream>
#include <cstdio>
#define TUBO_UNIT 3.305785
using namespace std;

int main(void) {
    int a, b; cin >> a >> b;
    
    double ans = a*b;
    ans = ans / TUBO_UNIT;
    
    printf("%.7f\n", ans);
    return(0);
}

C++: #include <iostream>
#include <cstdio>
using namespace std;
int main()
{
	const double t=3.305785;
	double a,b,s;
	cin >> a >> b;
	s = a*b/t;
	printf("%.6f\n",s);
	return 0;
}

C++: #include <iostream>
#include <cstdio>

using namespace std;

int main (void) {
  int a, b;
  double res;

  cin >> a >> b;

  res = a * b / 3.305785;
  
  printf("%.6lf\n", res)
  
  return 0;
}

C++: #include <iostream>
#include <sstream>
#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <ctime>
#include <cstring>
#include <string>
#include <vector>
#include <stack>
#include <queue>
#include <deque>
#include <map>
#include <set>
#include <bitset>
#include <numeric>
#include <utility>
#include <iomanip>
#include <algorithm>
#include <functional>
using namespace std;

typedef long long ll;
typedef vector<int> vint;
typedef vector<long long> vll;
typedef pair<int,int> pint;
typedef pair<long long, long long> pll;

#define MP make_pair
#define PB push_back
#define ALL(s) (s).begin(),(s).end()
#define EACH(i, s) for (__typeof__((s).begin()) i = (s).begin(); i != (s).end(); ++i)
#define COUT(x) cout << #x << " = " << (x) << " (L" << __LINE__ << ")" << endl

template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
template<class T1, class T2> ostream& operator << (ostream &s, pair<T1,T2> P) 
{ return s << '<' << P.first << ", " << P.second << '>'; }
template<class T> ostream& operator << (ostream &s, vector<T> P) 
{ for (int i = 0; i < P.size(); ++i) { if (i > 0) { s << " "; } s << P[i]; } return s; }
template<class T1, class T2> ostream& operator << (ostream &s, map<T1,T2> P) 
{ EACH(it, P) { s << "<" << it->first << "->" << it->second << "> "; } return s; }



double a, b;

int main() {
    while (cin >> a >> b) {
        cout << fixed << setprecision(9) << a * b / 3.305785 << endl;
    }
    return 0;
}

C++: #include <iostream>
#include <iomanip>
using namespace std;

int main(){
  double a, b;

  while(cin >> a >> b){
    cout << fixed << setprecision(10) << a * b / 3.305785 << endl;
  }
}

C++: #include <iostream>
#include <vector>
#include <algorithm>
#include <set>
#include <queue>
#include <stack>
#include <string>
#include <map>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cmath>

#define rep(i, n) for(int i = 0; i < n; i ++)
#define ALL(T) T.begin(), T.end()
#define mp make_pair
#define pb push_back

using namespace std;

typedef pair<int, int> pii;
typedef unsigned long long ull;
typedef vector<int> vi;
typedef vector<string> vs;

const int INF = 1 << 24;
const double N = 3.305785;

int main(void){
    for(double a, b; cin >> a >> b; printf("%.4f\n", a * b / N));

    return 0;
}