Donghua Candy Factory produced an average of 11.5 tons of candy per month in the first quarter of last year, and a total of 39 tons of candy in the second quarter. How many tons of candy did this factory produce per month on average in the first half of last year?
东华糖果厂去年第一季度平均每月生产糖果11.5吨，第二季度共生产糖果39吨．这个厂去年上半年平均每月生产糖果多少吨？
<gadget id="calculator">11.5 * 3</gadget>
<output>34.5</output>

<gadget id="calculator">34.5 + 39</gadget>
<output>73.5</output>

<gadget id="calculator">73.5 / 6</gadget>
<output>12.25</output>

<result>12.25</result>