When Xiao Ming calculated 5.4 divided by a number, because the decimal point of the quotient moved one more place to the right, the quotient became 18. What is the divisor of this question?
小明在计算5.4除以一个数时，由于商的小数点向右多移了一位，商就变成了18，这道题的除数是多少．
<gadget id="calculator">5.4 / 1.8</gadget>
<output>3</output>

<result>3</result>