If the decimal point of a decimal is moved to the left by 0.27, what is the original decimal?
一个小数的小数点向左移动一位后比原来减少了0.27，原来的小数是多少．
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">0.27 / (9/10)</gadget>
<output>0.3</output>

<result>0.3</result>