The decimal point of a decimal is moved one place to the right, and the new number is 28.8 larger than the original decimal. What is the original decimal?
一个小数的小数点向右移动一位，新数比原来的小数大28.8，原来这个小数是多少？
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">28.8 / 9</gadget>
<output>3.2</output>

<result>3.2</result>