计算 666×9

答案:
59994
|22×9|77×9|99×9|
|333×9|555×9|6666×9|
|444×9|7777×9|8888×9|
|333×9|555×9|6666×9|
|444×9|7777×9|8888×9|
答案:
198 693 891 2997 4995 59994 39996 69993 79992
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