A's number is 30, B's number is 3 times more than A's number, what is B's number?
甲数是30，乙数比甲数多3倍，乙数是多少？
<gadget id="calculator">30 * 3</gadget>
<output>90</output>

<gadget id="calculator">30 + 90</gadget>
<output>120</output>

<result>120</result>