It is known that the product of two factors is 4.5, one of which is 0.25, and what is the other factor.
已知两个因数的积是4.5，其中一个因数是0.25，另一个因数是多少．
<gadget id="calculator">4.5 / 0.25</gadget>
<output>18</output>

<result>18</result>