(1)为了便于叙述,我们将各方格用字母代替;
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/023b5bb5c9ea15ce964e60b8b5003af33b87b2db?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
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第一步,由A4B×6的个位数为0可知,B=5.
第二步,由A45×6=1DE0可知,A只能为2或3.但A为3时,345×6=2070,不可能等于1DE0,不合题意,故A=2.
第三步,由245×C=□□5可知,乘数十位上的C是小于5的奇数,即C只可能是1或3.
当C取1时,245×16<8□□□,不合题意,所以C不能取1,只能取3,故C=3.
这样,就可以填上所有的空格,即竖式是:
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/b17eca8065380cd720be225ca244ad34588281db?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
(2)根据竖式可得:
□41-55□=□3,由641-621=20;所以商十位上的数与除数相乘的积是558,商个位上的数与除数相乘的积是837;
558=93×6,837=93×9,所以,除数是93,商是69;被除数93×69=6417;
由以上可得:
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![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/d009b3de9c82d1583ce1d900830a19d8bc3e4224?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)