The ratio of A and B is 5:8, A's number is 25, what is B's number?
甲、乙两数的比是5：8，甲数是25，乙数是多少．
<gadget id="calculator">25 / 5</gadget>
<output>5</output>

<gadget id="calculator">5 * 8</gadget>
<output>40</output>

<result>40</result>