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This Python program runs in 106ms.

Solution:The smallest possible value for a moidore is 27 shillings. The largest possible value is 140 shillings.The other possible values are 28 shillings and 135 shillings.

The dictionary on my computer defines a

moidoreas:This is an example of a ‘frobenius problem’ (see http://ccgi.gladman.plus.com/wp/?page_id=563)