Xiaohua rides from home to the amusement park, with an average of 12 kilometers per hour. After riding for 2 hours, he is still 24 kilometers away from the amusement park. How far is Xiaohua's house from the amusement park?
小华从家骑车去游乐园，平均每小时行12千米，骑了2小时后离游乐园还有24千米．小华家离游乐园有多远？
<gadget id="calculator">12 * 2</gadget>
<output>24</output>

<gadget id="calculator">24 + 24</gadget>
<output>48</output>

<result>48</result>