Try to calculate 1-(1/2)+(1/3)-(1/4)+(1/5)-(1/6)...+(1/9)-(1/10)=?
试计算1-(1/2)+(1/3)-(1/4)+(1/5)-(1/6)…+(1/9)-(1/10)=？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">1 / 30</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">1 / 56</gadget>
<output>1/56 = around 0.017857</output>

<gadget id="calculator">1 / 90</gadget>
<output>1/90 = around 0.011111</output>

<gadget id="calculator">(1/2) + (1/12) + (1/30) + (1/56) + (1/90)</gadget>
<output>1_627/2_520 = around 0.645635</output>

<result>1_627/2_520 = around 0.645635</result>