A fruit shop sold a total of 38 boxes of fruit in the first 3 days of last week, and an average of 15 boxes of fruit per day in the last 4 days. How many boxes of fruit were sold per day on average this week?
某水果店上星期的前3天一共卖出水果38箱，后4天平均每天卖出水果15箱，这个星期平均每天卖出水果多少箱？
<gadget id="calculator">15 * 4</gadget>
<output>60</output>

<gadget id="calculator">60 + 38</gadget>
<output>98</output>

<gadget id="calculator">3 + 4</gadget>
<output>7</output>

<gadget id="calculator">98 / 7</gadget>
<output>14</output>

<result>14</result>