The ratio of A to B is 5:3, the number of A is 40, what is the number of B? How many.
甲数乙数的比5：3，甲数是40，乙数是多少？多少．
<gadget id="calculator">40 / 5</gadget>
<output>8</output>

<gadget id="calculator">3 * 8</gadget>
<output>24</output>

<result>24</result>