For a task, Xiao Hua can complete it in (1/2) hour alone, and Xiao Ming can complete it in (1/3) hour alone. How many hours would it take for two people to work together?
一项工作，小华单独做(1/2)小时完成，小明单独做(1/3)小时完成．若两个人合作则需要多少小时才能完成．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

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

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / (1/3)</gadget>
<output>3</output>

<gadget id="calculator">2 + 3</gadget>
<output>5</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>