paste

class Calculator
    DAYS_PER_YEAR=365
    attr_accessor :years, :rate, :amount
    def initialize(years, amount, rate)
        @years = years
        @rate = rate/100.0
        @amount = amount
    end

    def calculate
        
        (0..days).reduce(amount) do |acc|
            (daily_interest_rate * acc) + acc
        end
    end


    private 

    def days
        years * DAYS_PER_YEAR
    end

    def daily_interest_rate
        rate/DAYS_PER_YEAR
    end
end

puts Calculator.new(1, 5000, 70).calculate