#include <iostream>
#include <cmath>

using namespace std;

int main()
{
    double length, width, height;
    int percentage;
    cin >> length >> width >> height;

    double aquariumVolume = 105 * 77 * 89;
    double aquariumLitres = aquariumVolume * 0.001;
    double percentageCalculated = 18.5 * 0.01;
    double litresNeeded = aquariumLitres * (1 - percentageCalculated);

    cout.setf(ios::fixed);
    cout.precision(3);

    cout << litresNeeded << endl;
    return 0;
}