For an article, it takes 2 hours for Xiao Fang to type alone, 3 hours for Xiao Dong to type alone, how many hours does it take for two people to type together?
一篇文章，小方单独打字需2小时完成，小东单独打字需3小时完成，两人合打需几小时完成？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

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

<gadget id="calculator">(1/2) + (1/3)</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">1 / (5/6)</gadget>
<output>6/5 = around 1.2</output>

<result>6/5 = around 1.2</result>