Because 24*3=72, so 2400*30=how much.
因为24*3=72，所以2400*30=多少．
<gadget id="calculator">2_400 / 24</gadget>
<output>100</output>

<gadget id="calculator">30 / 3</gadget>
<output>10</output>

<gadget id="calculator">72 * 100 * 10</gadget>
<output>72_000</output>

<result>72_000</result>