Stocks and share calculator fetches current DLG price

dlg_stock_calc.rb

#!/usr/bin/env ruby

## Install Gem
# gem install stock_quote
 
require "stock_quote"
 
## Get price of DLG.DE stocks
stock = StockQuote::Stock.quote("DLG.DE").ask
 
commision   = 0.1 # Commision Cost 10 cent a share
options_no  = 1   # Number of shares
option_cost = 1.0 # Purchase cost of option  
 
total_cost = option_cost + commision
profit      = (stock - total_cost) * options_no
 
#euro to Stirling Conversion
profit_pounds = profit * 0.8

puts "DLG.DE Value (euro) : #{profit}"
puts "DLG.DE Value (GBP)  : #{profit_pounds}"

## Calculate Capital gains tax 28% on value over �11k
if profit_pounds > 11000
  profit_pounds_post_tax = (profit_pounds-11000)*0.72 + 11000
else
  profit_pounds_post_tax = profit_pounds
end
puts "Post Tax (GBP)      : #{profit_pounds_post_tax}"