A one-digit decimal is 2.7 more than the original number after removing the decimal point. What is the one-digit decimal?
一个一位小数去掉小数点后比原来的数多2.7，这个一位小数是多少．
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">2.7 / 9</gadget>
<output>0.3</output>

<result>0.3</result>