A transport team transported 36 tons of goods per day on average in the first two days, and 39 tons in the third day. How many tons does this fleet transport on average per day?
一个运输队，前两天平均每天运货36吨，第三天运货39吨．这个运输队平均每天运货多少吨？
<gadget id="calculator">2 * 36</gadget>
<output>72</output>

<gadget id="calculator">72 + 39</gadget>
<output>111</output>

<gadget id="calculator">111 / 3</gadget>
<output>37</output>

<result>37</result>