A box of chocolates has been eaten (3/5), and there are 16 pieces left. How many pieces are there in this box of chocolates?
一盒巧克力，已经吃了(3/5)，还剩16块，这盒巧克力原来有多少块．
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">16 / (2/5)</gadget>
<output>40</output>

<result>40</result>