There is a one-digit decimal. If the decimal point is removed, the number obtained is 907.2 more than the original number. What is the one-digit decimal?
有一个一位小数，如果去掉小数点，得到的数比原数多907.2，这个一位小数是多少．
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">907.2 / 9</gadget>
<output>100.8</output>

<result>100.8</result>