A batch of 75 tons of goods. It has been shipped 6 times, and there are 40.8 tons left. How many tons are shipped on average each time?
一批货物75吨．已经运了6次，还剩40.8吨，平均每次运多少吨？
<gadget id="calculator">75 - 40.8</gadget>
<output>34.2</output>

<gadget id="calculator">34.2 / 6</gadget>
<output>5.7</output>

<result>5.7</result>