using System;
class Resistor {
    double R;
    public Resistor(double R) {
        this.R = R;
    }
    public double GetCurrent(double U) {
        return U / R;
    }
}

public class ResistorRun1 {
    public static void Main(String[] args) {
        Resistor R1 = new Resistor(220);
		
        Console.WriteLine(R1.GetCurrent(5));
    }
}