Currency Convertor Using API data pull

Here are some examples of the output I want: [login to view URL] [login to view URL] [login to view URL] I want to create a webpage where the webpage automatically pulls the live current exchange rate from a free website (such as free [login to view URL] api data or elsewhere) and then a user can enter the amount of currency they want to buy and the website will populate the amount of currency they need to provide (sell) to buy that currency. This basically helps them calculate a real time currency exchange. I only want to focus on USD and CAD. (2 currency pairs but may want to expand to EUR and GBP). For example, the website will show a selection BUY US Dollars with SELL Canadian dollars. The user enters the amount of US dollars they want to buy in a blank field and then they click convert and the website will pull a live FX feed for Canadian to USD FX rate and then it will show the user the amount of Canadian required to buy US dollars and also show the exchange rate used. See the links above for an example. Step 1: Field for the client name and account number (just blank fields for the user to identify who they are) Step 2: User indicates Buy Us dollars and SELL with Canadian dollars Step 3: User indicates buy 10,000 USD in a blank field. Step 4: Webpage pulls the live rate for USD/CAD and then shows a rate of 1.0700 USD/CAD (example) and shows 10,700 Canadian as the amount in another field as it uses the 10,000 USD they want to buy multiplied by a rate of 1.07 and will show CAD 10,700. Step 5: The website will show to buy USD 10,000, you need to provide 10,700 Canadian. If a button is pushed, this gets emailed to me (shows the name, currency to buy, and currency amount to sell). Step 6: After submit is pressed, it takes them to another message I provide.