Xiaoya walked from home to the station 4 times, 16 minutes, 15 minutes, 18 minutes, 15 minutes respectively. How many minutes does it take Xiaoya to walk from home to the station on average?
小亚从家走到车站走了4次，分别走了16分钟、15分钟、18分钟、15分钟．小亚从家走到车站平均一次要走多少分钟．
<gadget id="calculator">16 + 15 + 18 + 15</gadget>
<output>64</output>

<gadget id="calculator">64 / 4</gadget>
<output>16</output>

<result>16</result>