A neat example from Joyce (early in Ulysses) of how to calculate the milk bill when a shilling is 12 pence (in case it's unclear, the bill is two shillings and

A neat example from Joyce (early in Ulysses) of how to calculate the milk bill when a shilling is 12 pence (in case it's unclear, the bill is two shillings and two pence; the boys end up paying a florin (24 pence) and owing 2 pence): -- Have you your bill? We had better pay her, Mulligan, hadn't we? Stephen filled the three cups. -- Bill, sir? she said, halting. Well, it's seven mornings a pint at twopence is seven twos is a shilling and twopence over and these three mornings a quart at fourpence is three quarts is a shilling and one and two is two and two, sir.