pure math
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[250(80x+1)+2y-250]/2 = (250*80x+2y)/2 = (2000x+2y)/2 = 1000x+y公仔箱論壇* {' \3 b: o5 _8 A3 h, b
公仔箱論壇8 P- D, {: O( i" J9 ^! E" G4 b
if x = 111 y = 2222, you number is 111-2222 |