The ratio of A and B is 2:3. The number B is 60, what is the number A
甲乙两数的比是2：3．乙数是60，甲数是多少
<gadget id="calculator">60 * 2</gadget>
<output>120</output>

<gadget id="calculator">120 / 3</gadget>
<output>40</output>

<result>40</result>