The ratio of the numbers A and B is 6:5, the number B is 40, what is the number A?
甲、乙两数的比是6：5，乙数是40，甲数是多少．
<gadget id="calculator">40 / 5</gadget>
<output>8</output>

<gadget id="calculator">6 * 8</gadget>
<output>48</output>

<result>48</result>