Rieko

pure math公仔箱論壇0 m5 [5 v. V1 z- B2 m, ~

" B5 |% `. n- I  M/ k( C公仔箱論壇[250(80x+1)+2y-250]/2 = (250*80x+2y)/2 = (2000x+2y)/2 = 1000x+y
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if x = 111 y = 2222, you number is 111-2222