There is a rope 2 meters long, cut off (1/4) for the first time, and cut off (1/2) meter for the second time, how many meters are cut in total.
有2米长的绳子，第一次剪去(1/4)，第二次剪去(1/2)米，两次共剪去多少米．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">2 * (1/4)</gadget>
<output>1/2 = around 0.5</output>

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

<gadget id="calculator">(1/2) + (1/2)</gadget>
<output>1</output>

<result>1</result>