66666*10001+66666*6666=how much.
66666*10001+66666*6666=多少．
<gadget id="calculator">66_666 * 10_001</gadget>
<output>666_726_666</output>

<gadget id="calculator">66_666 * 6_666</gadget>
<output>444_395_556</output>

<gadget id="calculator">666_726_666 + 444_395_556</gadget>
<output>1_111_122_222</output>

<result>1_111_122_222</result>