Formulae Substitution
Welcome, welcome, benvenuti to Luigi's Lunch Lounge, or should I say: svaga hai to Taj's Indian delicacies. You have entered the Waiter/Waitress of the Year competition. As part of the selection process you will need to be quick at taking customer's orders. A friendly tip, if three people all want beef byriani, better to write 3b, for short. The second stage of the selection procedure requires you to very quickly...