Cryptarithmetic Puzzles for 2023, Puzzle #17 CUP + CUP = PINT

Hey, what better way to learn about unit conversion than to solve math puzzles?

Try out this one CUP + CUP = PINT. This should be doable by hand!

Solutions are below the image.

SPOILER SOLUTIONS!

CUP_first CUP_second PINT_third
531 531 1062
541 541 1082
651 651 1302
671 671 1342
691 691 1382
731 731 1462
781 781 1562
791 791 1582
851 851 1702
931 931 1862