7.5*3-3/7.5=how much
7.5*3-3/7.5=多少
<gadget id="calculator">7.5 * 3</gadget>
<output>22.5</output>

<gadget id="calculator">3 / 7.5</gadget>
<output>0.4</output>

<gadget id="calculator">22.5 - 0.4</gadget>
<output>22.1</output>

<result>22.1</result>