How many tons is 30% more than 80 tons?
比80吨多30%是多少吨．
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 + (3/10)</gadget>
<output>13/10 = around 1.3</output>

<gadget id="calculator">80 * (13/10)</gadget>
<output>104</output>

<result>104</result>