The number obtained after expanding a decimal by 3 times is larger than the original number 5.4. What is this decimal.
一个小数扩大3倍后得到的数比原来的数大5.4．这个小数是多少．
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">5.4 / 2</gadget>
<output>2.7</output>

<result>2.7</result>