(7.5+7.5+7.5+7.5)*125*4.
(7.5+7.5+7.5+7.5)*125*4．
<gadget id="calculator">7.5 + 7.5 + 7.5 + 7.5</gadget>
<output>30</output>

<gadget id="calculator">30 * 125 * 4</gadget>
<output>15_000</output>

<result>15_000</result>