If the decimal point of a positive number is moved one place to the right, the resulting number is 38.25 larger than the original number. What is the original number?
把一个正数的小数点向右移动一位，所得的数比原数大38.25，原数是多少．
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">38.25 / 9</gadget>
<output>4.25</output>

<result>4.25</result>