A rope was originally intended to be cut into 30 equal pieces, but each piece was actually cut shorter (1/6) than the original one, and how many more pieces were actually cut than the original one.
一根绳子原打算剪成相等的30根，实际剪的每根比原来短(1/6)，实际比原来多剪多少根．
<gadget id="calculator">1 / 30</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

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

<gadget id="calculator">(1/30) * (5/6)</gadget>
<output>1/36 = around 0.027778</output>

<gadget id="calculator">1 / (1/36)</gadget>
<output>36</output>

<gadget id="calculator">36 - 30</gadget>
<output>6</output>

<result>6</result>