Amperes (or milliamperes) is a measure of current flow and hence is a "speed", like mph. You would not say "I go 45 mph per day", so don't say "45 mA per day" either.

Battery capacities are measured in amp-hours (among other things), if you have a 100 amp-hour (Ah) battery, it can (provided other things hold) put out 100 amps for 1 hour, or 1 amp for 100 hours.

The AGM battery in a Karma should probably have at least 60 to 100 Ah (Harleyguy will probably know the actual capacity). At 60 mA draw, 24 hours = 24 x 60 = 1440 mAh = 1.44 Ah. In 7 days that's 10 aH or 10% of the capacity of a 100 Ah battery, which means you should be able to go about 10 weeks (2.5 months) before completely draining it.

AGM batteries are better about being completely drained ("deep cycled") than plain 12V batteries but it's still a bad idea to do that if you can avoid it.