What is the original number after moving the decimal point of a number to the right by 16.2?
把一个数的小数点向右移动一位后比原数大16.2，原数是多少．
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

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

<result>1.8</result>