A truck transports 8 tons of goods each time. After 20 times of transportation, it just completes half of the whole task. How many tons of goods are there to be transported?
一辆货车每次运货8吨，运了20次后，正好完成了全部任务的一半，要运的货物共有多少吨？
<gadget id="calculator">8 * 20 * 2</gadget>
<output>320</output>

<result>320</result>