How many tons is (1/2) ton more than (1/4) ton?
比(1/4)吨多(1/2)吨是多少吨．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/4) + (1/2)</gadget>
<output>3/4 = around 0.75</output>

<result>3/4 = around 0.75</result>