The decimal point of a decimal is moved one place to the right, and the new number obtained is 38.88 greater than the original number. What is the original decimal number?
一个小数的小数点向右移动一位，得到的新数比原数大38.88，原来的小数是多少．
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">38.88 / 9</gadget>
<output>4.32</output>

<result>4.32</result>