来自施红妍的问题
例：2.1×9=18.9；3.21×9=28.89；4.321×9=38.889；5.4321×9=48.8889.求6.54321×9=?；7.654321×9=?
例：2.1×9=18.9；3.21×9=28.89；4.321×9=38.889；5.4321×9=48.8889.求6.54321×9=?；7.654321×9=?
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2020-12-19 21:26