Simple calculation: 99999**2+199999.
简便计算：99999**2+199999．
<gadget id="calculator">99_999 ** 2</gadget>
<output>9_999_800_001</output>

<gadget id="calculator">9_999_800_001 + 199_999</gadget>
<output>10_000_000_000</output>

<result>10_000_000_000</result>