The price of a notebook is (6/5) yuan, which is exactly (2/5) of the price of a pen. How much is a pen?
一本笔记本的价钱是(6/5)元，正好是一枝钢笔价钱的(2/5)．一枝钢笔多少元？
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(5/6) / (2/5)</gadget>
<output>25/12 = around 2.083333</output>

<result>25/12 = around 2.083333</result>