The number of A is 3 times the number of B, how much more is A than B?
甲数是乙数的3倍，甲比乙多多少
<gadget id="calculator">1 * 3</gadget>
<output>3</output>

<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">2 / 1</gadget>
<output>2</output>

<result>2</result>