9.10 22:00

+22880

22880+水2060=24940

24940+54775=寄79715

9.1-9.10

+38482-16467-72858+22890-48640-8500-13620-4541+54775+24940=-23539

0.5

417+656+434+475+490+850+390+403+716

+343=5174