A workshop needs to process 550 machine parts, and has been working for 3.5 hours, processing 52 parts per hour on average. In order to catch up with the task, the rest has to be processed within 4 hours. How many parts are processed per hour on average?
某车间要加工550个机器零件，已经工作了3.5h，平均每小时加工52个零件．为了赶任务，剩下的要在4h内加工完，平均每小时加工多少个零件？
<gadget id="calculator">52 * 3.5</gadget>
<output>182</output>

<gadget id="calculator">550 - 182</gadget>
<output>368</output>

<gadget id="calculator">368 / 4</gadget>
<output>92</output>

<result>92</result>