The ironworks shipped 320 tons of iron ore for the first time, five times that of the second shipment. The second shipment was 2 tons less than the third shipment. How many tons were the third shipment?
炼铁厂第一次运来铁矿石320吨，是第二次运来的5倍，第二次比第三次少运2吨，第三次运来多少吨？
<gadget id="calculator">320 / 5</gadget>
<output>64</output>

<gadget id="calculator">64 + 2</gadget>
<output>66</output>

<result>66</result>