99*99=9801, 999*999=998001, 9999*9999=99980001. No need to calculate, just write how much 99999*99999=.
99*99=9801，999*999=998001，9999*9999=99980001．不用计算，直接写出99999*99999=多少．
<gadget id="calculator">99_999 * 99_999</gadget>
<output>9_999_800_001</output>

<result>9_999_800_001</result>