Functions in the LC Money API:
lc_money.addMoney( val1, val2 )
  Adds the two money values together and returns the result
lc_money.subtractMoney( val1, val2 )
  Subtracts the second money value from the first and returns the result
lc_money.percentageOfMoney( val, percentage )
  Gets the given percentage of the money value and returns the result
lc_money.multiplyMoney( val, mult )
  Multiplies the money value by the multiplier and returns the result
lc_money.readInventoryValues( table )
  Obtains the monetary value of the item data in the given table.
  Works with singular items, or a table containing many item entries.
  Can read the contents of other "inventory" peripherals from the table produced by their "list" function

Money Value arguments accept strings in the MoneyValueArgument format (i.e. "coin;5-lightmanscurrency:coin_copper")
Also accepts data tables that were returned by various other Lightman's Currency peripherals (including the results of these methods)