Calculation: 9999*9999+29999.
计算：9999*9999+29999．
<gadget id="calculator">9_999 * 9_999</gadget>
<output>99_980_001</output>

<gadget id="calculator">99_980_001 + 29_999</gadget>
<output>100_010_000</output>

<result>100_010_000</result>