According to the rules in 1, (1/3), (1/9), (1/27)... How much should be filled in next
按1、(1/3)、(1/9)、(1/27)…中的规律接下来应填多少
<gadget id="calculator">1 / 27</gadget>
<output>1/27 = around 0.037037</output>

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

<gadget id="calculator">(1/27) * (1/3)</gadget>
<output>1/81 = around 0.012346</output>

<result>1/81 = around 0.012346</result>