(213/264)×(264528792/213426639)就这个了.

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(213/264)×(264528792/213426639)就这个了.(213/264)×(264528792/213426639)就这个了.(213/264)×(264528792/2134266

(213/264)×(264528792/213426639)就这个了.
(213/264)×(264528792/213426639)
就这个了.

(213/264)×(264528792/213426639)就这个了.
(213/264)×(264528792/213426639)=(213/213426639)*(264/264528792)=(1/3)*(1/3)=1/9

213/264)×(264528792/213426639)=<213/213426639>×<264528792/264>
约分消分子就OK了,给个分吧