150-50*20%
150-50*20%
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">50 * (1/5)</gadget>
<output>10</output>

<gadget id="calculator">150 - 10</gadget>
<output>140</output>

<result>140</result>