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)
	}

}

Python: from decimal import Decimal as d
a,b=list(map(d,input().split()))
print("{:.6f}".format(a*b/d("3.305785")))

Python: a,b =  (int(x) for x in input().split(" "))
c = a * b / 3.305785
print(c)

Python: a,b=map(int,input().split())
print(float(a*b/3.305785))

Python: a,b=map(lambda x:int(x),input().split())

tubo = a * b / 3.305785 
print(tubo)

Python: a,b=map(int,input().split())
S=a*b/3.305785
print(format(S))

Python: # AOJ 0094 Calculation of Area
# Python3 2018.6.15 bal4u

a, b = list(map(float, input().split()))
print(a*b / 3.305785)

Python: a,b=(int(x) for x in input().split())
print(f'{a*b/3.305785:4f}')

Python: x,y=map(int,input().split())
print(x*y/3.30578)

Python: # coding: utf-8
# Your code here!

a, b = map(int, input().split())
S = a * b / 3.305785
print(S)

Python: a,b = map(int,input().split())
print(a * b / 3.305785)

Python: a, b = map(int, input().split())
print(a * b / 3.305785)

Python: a,b=map(int,input().split())
S=a*b/3.305785
print(S)

Python: a,b = map(int,input().split()) #標準入力
print((a * b) / 3.305785) #何平方のメートルかを求め坪に直す

Python: a,b=(int(x) for x in input().split())

if a<=100 and b<=100:
    print(f"{a*b/3.305785:.4f}")

Python: a,b = map(float,input().split())

print('{:.6f}'.format(a*b/3.305785))

Python: a,b=map(int,input().split())
if a<=100 and b<=100:
    print(f'{a*b/3.305785: .6f}') 
else:
    pass

Python: a, b = map(int,input().split())
S = float((a*b)/3.305785)
print("{:.6f}".format(S))

Python: # coding: utf-8
# Your code here!
a,b=map(int,input().split())
print(a*b/3.305785)

Python: a,b=map(float,input().split())

print(f'{a*b/3.305785 :.5f}')

Python: a,b=(int(x) for x in input().split())
if a<=100 and b<=100:
   print("{:.4f}".format(a*b/3.305785))
else:
   pass

Python: # coding: utf-8
# Your code here!

a, b = map(int, input().split())
S = a * b / 3.305785
print(S)

Python: a , b = map (int , input() . split())

S = a*b/3.305785

print("{:.6f}".format(S))

Python: a,b=map(int,input().split())

c=(a*b)/3.305785

print(round(c,6))

Python: a, b = map(int, input().split())

S = a * b / 3.305785

print(f"{S:.6f}")

Python: a,b=map(int,input().split())
print("{:.6f}".format((a*b)/3.305785))

Python: a,b = map(float,input().split())
S = (a*b)/3.305785
print(S)

Python: a,b = map(float,input().split())
S = (a * b)/  3.305785
print('{:.06f}'.format(S))

Python: a,b=map(int, input().split())
print(f"{a*b/3.305785:.6f}")

Python: a,b = (int(x) for x in input().split())
S = a * b / 3.305785
print(S)

Python: a,b=map(int,input().split())
print(f'{a*b/3.305785:.07f}')

Python: a, b = [int(i) for i in input().split()]

print('{:.6f}'.format(float(a*b) / 3.305785))

Python: # -*- coding: utf-8 -*-
"""
http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=0094
"""
import sys


def sm_to_tsubo(a, b):
    return (a * b / 3.305785)



def main(args):
    for line in sys.stdin:
        a, b, = [int(x) for x in line.strip().split(' ')]
        result = sm_to_tsubo(a, b)
        print('{:.6f}'.format(result))

if __name__ == '__main__':
    main(sys.argv[1:])

Python: from decimal import Decimal as d
a,b=list(map(d,input().split()))
print("{:.6f}".format(a*b/d("3.305785")))

Python: a,b=map(float,input().split())

T=a*b/3.305785

print(f"{T:.6f}")

Python: a,b=map(int,input().split())
s=a*b/3.305785
print(f'{s:.6f}')

Python: a, b = map(int, input().split())
s=(a*b)/3.305785
print(s)

Python: a,b = map(int,input().split()) 
s = a * b
S = s / 3.305785 
print(f"{S:.6f}")

Python: import math
a,b=map(int,input().split())
s=a*b
t=3.305785
print(f"{s/t:.4f}")

Python: a,b = map(int,input().split())
x = a*b/3.305785
print(f"{x:0.6f}")

Python: a,b = map(float,input().split())
S = a*b/3.305785
print(S)

Python: a,b=map(int,input().split())

k=a*b
S=k/3.305785

print(f'{S:.6f}')

Python: s = input().split()
a = int(s[0])
b = int(s[1])
print("{:.6f}".format(a*b/3.305785))

Python: a,b=map(int,input().split())
h=a*b
print(f"{h/3.305785:.6f}")

Python: k = list(map(int, input().split()))
a = k[ 0 ]
b = k[ 1 ]

base = 3.305785
print((a * b) / base)

Python: a,b = map(float,input().split())
S = (a * b)/  3.305785
print('{:.06f}'.format(S))

Python: a,b=map(int,input().split())
c=a*b
d=3.305785
e=c/d
print(f"{e:.6f}")

Python: a,b = map(int,input().split())
S = a*b/3.305785
print('{:f}'.format(S))

Python: # coding: utf-8
# Your code here!
a,b=map(int,input().split())

S=a*b/3.305785
print(S)

Python: a,b=map(int,input().split())
print(f'{a*b/3.305785:.6f}')

Python: a,b=map(int,input().split())
print(round(a*b/3.305785,6))

Python: a,b=map(int,input().split())
print("{0:.6f}".format(a*b/3.305785))

Python: a, b = map(int, input().split())
print(a*b/3.305785)

Python: def tsubo(x,y):
    return (x * y) / 3.305785
S = tsubo(a,b)
print(S)

Python: a, b = map(int, input().split())
print(a * b / 3.305785)

Python: try:
    while True:
        a, b= map(float, input().split())
        S = a * b / 3.305785
        print(S)
except EOFError:
    pass

Python: a,b = map(float,input().split())
S = print('{:.6f}'.format(a*b/3.305785))

Python: a,b=map(int,input().split())
S=a*b/3.305785
print(f"{S:.6f}")

Python: a, b = map(int, input().split())
print(a * b / 3.305785)

Python: 
a,b=map(int,input().split())

S=(a*b)/3.305785

print('{0:.4f}'.format(S))

Python: a,b=map(int, input().split())
x=3.305785

s=a*b/x

print("{:.6f}".format(s))

Python: a,b=map(float,input().split())
S=a*b
print(S/ 3.305785)

C++: //include
//------------------------------------------
#include <vector>
#include <list>
#include <map>
#include <set>
#include <deque>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <cctype>
#include <string>
#include <cstring>
#include <ctime>

using namespace std;

//conversion
//------------------------------------------
inline int toInt(string s) {int v; istringstream sin(s);sin>>v;return v;}
template<class T> inline string toString(T x) {ostringstream sout;sout<<x;return sout.str();}

//math
//-------------------------------------------
template<class T> inline T sqr(T x) {return x*x;}

//typedef
//------------------------------------------
typedef vector<int> VI;
typedef vector<VI> VVI;
typedef vector<string> VS;
typedef pair<int, int> PII;
typedef long long LL;
typedef unsigned long long ULL;

//container util
//------------------------------------------
#define ALL(a)  (a).begin(),(a).end()
#define RALL(a) (a).rbegin(), (a).rend()
#define PB push_back
#define MP make_pair
#define SZ(a) int((a).size())
#define EACH(i,c) for(typeof((c).begin()) i=(c).begin(); i!=(c).end(); ++i)
#define EXIST(s,e) ((s).find(e)!=(s).end())
#define SORT(c) sort((c).begin(),(c).end())

//repetition
//------------------------------------------
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n)  FOR(i,0,n)

//constant
//--------------------------------------------
const double EPS = 1e-10;
const double PI  = acos(-1.0);

//clear memory
#define CLR(a) memset((a), 0 ,sizeof(a))

//debug
#define dump(x)  cerr << #x << " = " << (x) << endl;
#define debug(x) cerr << #x << " = " << (x) << " (L" << __LINE__ << ")" << " " << __FILE__ << endl;

int main() {
  double a, b, ans;
  double t = 3.305785;

  cin >> a >> b;
  ans = a*b / t;
  printf("%.6lf\n", ans);
}