Xiaomin bought 3 of the same diary for 5.4 yuan, and Xiaoying wanted to buy 5 of the same diary, how much would it cost?
小敏买3本同样的日记本用了5.4元，小颖想买同样的日记本5本，需要多少钱？
<gadget id="calculator">5.4 / 3</gadget>
<output>1.8</output>

<gadget id="calculator">1.8 * 5</gadget>
<output>9</output>

<result>9</result>