除法不用教就蛮好
https://link.storjshare.io/raw/jxcubmzpusd7fh6vajkeihiz5qra/production/69431e41f1d779749444769e331b1390226a9fb7bf9736963bb5ab4286671fa5.JPG
https://link.storjshare.io/raw/juwxzlnrahcnj22svyxp5lglkonq/production/f6f0fc458ec6d52fd76c5886d10c9f824664e5595df3b315b4b66d34ced3e751.JPG