We figured out why the game doesn't necessarily enforce a "fewest coins" policy; this is because it allows the smallest required unit in a fewest coins solution to be further broken up.
To illustrate this, we can look at $4.35.
The smallest coins solution in largest to smallest order would be:
4 dollars, 1 quarter, and 1 dime.
In this case, the 1 dime would be allowed to be broken up into any of its possible combinations such as 2 nickels, 1 nickel and 5 pennies, or 10 pennies.
We decided to allow this functionality, and so bug #4 is fixed.
Fixing Bug #5 may be as easy as moving the one-line day increment to different areas until we find the place that works for us.
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