Calculate with reciprocal equation: (1/2)-(1/3)+(1/5).
用递等式计算：(1/2)-(1/3)+(1/5)．
<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>1/6 = around 0.166667</output>

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

<gadget id="calculator">(1/6) + (1/5)</gadget>
<output>11/30 = around 0.366667</output>

<result>11/30 = around 0.366667</result>