When Wang Lan calculated 4.5 divided by a number, because the decimal point of the quotient was wrong by one place to the right, the result was 1.5. What is the divisor of this question.
王兰在计算4.5除以一个数时，由于商的小数点向右点错了一位，结果是1.5．这道题的除数是多少．
<gadget id="calculator">4.5 / 0.15</gadget>
<output>30</output>

<result>30</result>