Master Li processes 2 parts in 3 hours, how many hours does it take on average to process one part?
李师傅3小时加工2个零件，平均加工一个零件所需的时间是多少小时．
<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<result>3/2 = around 1.5</result>