There are 77 boxes of pens in the store, the pens are ballpoint pens (7/9), the ballpoint pens are pencils (11/8), how many boxes of pencils are there in the store?
商店里有钢笔77盒，钢笔是圆珠笔的(7/9)，圆珠笔是铅笔的(11/8)，商店里有铅笔多少盒？
<gadget id="calculator">7 / 9</gadget>
<output>7/9 = around 0.777778</output>

<gadget id="calculator">11 / 8</gadget>
<output>11/8 = around 1.375</output>

<gadget id="calculator">77 / (7/9) / (11/8)</gadget>
<output>72</output>

<result>72</result>