After the decimal point of a number is moved one place to the left, it is 0.36 smaller than the original number. What is the original number?
一个数的小数点向左移动一位后，比原数小了0.36，原数是多少．
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">0.36 / 9</gadget>
<output>0.04</output>

<gadget id="calculator">0.04 * 10</gadget>
<output>0.4</output>

<result>0.4</result>