Ruby program to calculate the product of two given numbers using recursion

def calculateProduct(a, b)
    if a < b
        return calculateProduct(b, a);
    elsif b != 0
        return (a + calculateProduct(a, b - 1));
    else
        return 0;
    end
end

print "Enter number1: ";
number1 = gets.chomp.to_i;  

print "Enter number2: ";
number2 = gets.chomp.to_i;  

result = calculateProduct(number1, number2);

print "Product is: ",result;

Output:

Enter number1: 5
Enter number2: 3
Product is: 15