project is completed in 2 days and B in 3 days. How many days will the two teams work together to complete half of the project?
一项工程，甲做2天完成，乙做3天完成，两队合做几天完成这项工程的一半？
<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">(1/2) / (5/6)</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>