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My favorite calculator is OpalCalc: https://www.skytopia.com/software/opalcalc/ https://www.skytopia.com/software/opalcalc/
by kholdstayr 4y ago
My favorite calculator is OpalCalc:
https://www.skytopia.com/software/opalcalc/ https://www.skytopia.com/software/opalcalc/