There are 6 astronauts on the space station, and they need to arrange shifts and rests. There are two duty positions, so within 120 hours, how many hours does each astronaut rest on average?
空间站上有6位宇航员，需要安排轮流值班和休息．值班岗位有两个，那么在120小时内，平均每位宇航员休息了多少小时．
<gadget id="calculator">2 / 6</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">120 * (1/3)</gadget>
<output>40</output>

<gadget id="calculator">120 - 40</gadget>
<output>80</output>

<result>80</result>