You can put this solution on YOUR website! You need to be clearer than "30vinvh" for how tall.
Believe it or not, you might expect about 54 coffee beans in 1 tablespoon of volume. You can look for references to give you some unit conversions involving inches, cubic inches, cups, and tablespoons.
Maybe it was 27 beans in a tablespoon. I don't remember which.
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A quick search using Google showed a listing giving 1 tablespoon = 0.30078 cubic inches.
Volume of the container: -----cubic inches
A quick count of 1 tablespoon measure was 43 beans. This will vary depending on the size of any bean. Your beans may be different. Each measure trial will vary also. Try making some bean counts at one tablespoon each and find an average, and use that for a better value but using YOUR BEANS. If you find , then you would continue your problem as:
(