9999*222+3333*334.
9999*222+3333*334．
<gadget id="calculator">9_999 * 222</gadget>
<output>2_219_778</output>

<gadget id="calculator">3_333 * 334</gadget>
<output>1_113_222</output>

<gadget id="calculator">2_219_778 + 1_113_222</gadget>
<output>3_333_000</output>

<result>3_333_000</result>