Population increase

import java.util.Scanner;

public class Main {

    public static void main(String[] args){

       Scanner scanner = new Scanner(System.in);

        int numOrganisms;
        double populationIncrease;
        int daysToMultiply;
        double increase;
        double sumIncrease = 0.0;
        double populationResult;

        System.out.print("Enter the starting number of organism: ");
        numOrganisms = scanner.nextInt();
        System.out.print("Enter the daily increase: ");
        populationIncrease = scanner.nextDouble();
        System.out.println("Enter the numbers of days to multiply: ");
        daysToMultiply = scanner.nextInt();

        if (numOrganisms < 2)
        {
            System.out.println("ERROR");
            System.exit(0);
        }
        else if (populationIncrease < 0)
        {
            System.out.println("ERROR");
            System.exit(0);
        }
        else if (daysToMultiply < 1)
        {
            System.out.println("ERROR");
            System.exit(0);
        }

        for (int i = 0; i <= daysToMultiply; i++)
        {
            increase = numOrganisms * populationIncrease;

            sumIncrease += increase;

            populationResult = numOrganisms * sumIncrease;

            System.out.println("Population for day " + i + ": " + populationResult);
        }
    }
}