When Ning Ning divided a decimal by 8.5, he shifted the decimal point of the dividend by one place to the left, and the result was 2.5. What is the correct dividend for this question?
宁宁在计算一个小数除以8.5时，由于将被除数的小数点向左点错了一位，得到的结果是2.5，这道题的正确被除数是多少？
<gadget id="calculator">8.5 * 2.5 * 10</gadget>
<output>212.5</output>

<result>212.5</result>