If the decimal point of a number is moved to the left by 2.7, what is the original number?
一个数的小数点向左移动一位后比原数减少2.7，原来这个数是多少．
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

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

<gadget id="calculator">0.3 * 10</gadget>
<output>3</output>

<result>3</result>