224 parts are planned to be made for one car type, and after 8 hours of making, there are still 80 parts left to be made. How many parts does this turner make on average per hour?
一个车式计划做224个零件，做了8小时后，还剩下80个未做．这个车工平均每小时做多少个零件？
<gadget id="calculator">224 - 80</gadget>
<output>144</output>

<gadget id="calculator">144 / 8</gadget>
<output>18</output>

<result>18</result>