Two convoys transport a batch of goods. The first convoy has 8 vehicles, transporting a total of 32 tons, and the second convoy has 12 vehicles, with an average of 3.5 tons per vehicle. How many tons are each of these two convoys on average?
两个车队运一批货物，第一车队8辆汽车，共运32吨，第二车队12辆汽车，平均每辆运货3.5吨，这两个车队平均每辆运货多少吨？
<gadget id="calculator">3.5 * 12</gadget>
<output>42</output>

<gadget id="calculator">42 + 32</gadget>
<output>74</output>

<gadget id="calculator">8 + 12</gadget>
<output>20</output>

<gadget id="calculator">74 / 20</gadget>
<output>37/10 = around 3.7</output>

<result>37/10 = around 3.7</result>