If you move the decimal point of a number one place to the left, the resulting number is 27 less than the original number. What is the original number?
把一个数的小数点向左移动一位，得到的数比原数少27，原数是多少？
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">27 / 9</gadget>
<output>3</output>

<gadget id="calculator">3 * 10</gadget>
<output>30</output>

<result>30</result>