Xiaogang scored 18 goals, and Xiaoqiang scored twice as many goals as Xiaogang. How many goals did they score together?
小刚射进了18球，小强射进的球是小刚2倍，他们俩一共射进了多少个球？
<gadget id="calculator">1 + 2</gadget>
<output>3</output>

<gadget id="calculator">18 * 3</gadget>
<output>54</output>

<result>54</result>