In a pile of mangoes, the king takes (1/6), the queen takes the remaining (1/5), and the three princes take the remaining (1/4), (1/3), (1/2) , the youngest prince takes the remaining 3 mangoes. Do you know what the total number of mangoes is?
在一堆芒果中，国王取(1/6)，王后取剩下的(1/5)，三个王子分别取逐次余下的(1/4)、(1/3)、(1/2)，最年幼的王子取剩下的3个芒果．你知道芒果的总数是多少吗？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 - (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 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

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

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</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">3 / (1/2) / (2/3) / (3/4) / (4/5) / (5/6)</gadget>
<output>18</output>

<result>18</result>