After moving the decimal point of 3.07 one place to the left, what is the difference between the new number and the original number?
把3.07的小数点向左移动一位后，新数与原数的差是多少．
<gadget id="calculator">30.7 - 3.07</gadget>
<output>27.63</output>

<result>27.63</result>