Calculation: 999*999+1999=how much.
计算：999*999+1999=多少．
<gadget id="calculator">999 * 999</gadget>
<output>998_001</output>

<gadget id="calculator">998_001 + 1_999</gadget>
<output>1_000_000</output>

<result>1_000_000</result>