9800乘12345等于?

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9800乘12345等于?9800乘12345等于?9800乘12345等于?等于1209810009800X12345=1209810009800X12345=(10000-200)X12345=1

9800乘12345等于?
9800乘12345等于?

9800乘12345等于?
等于120981000

9800X12345=120981000

9800X12345=(10000-200)X12345=10000X12345-200X12345=120981000

9800X12345=(10000-200)X12345=10000X12345-200X12345=120981000