For a decimal, if the decimal point is moved one bit to the left, the resulting number is 16.2 less than the original number. What is the original number?
一个小数，如果把它的小数点向左移动一位，得到的数比原数少16.2，原来这个小数是多少．
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">16.2 / 9</gadget>
<output>1.8</output>

<gadget id="calculator">1.8 * 10</gadget>
<output>18</output>

<result>18</result>