The school bought 127 story books and 73 science and technology books. These books should be placed in 4 bookcases. How many books are placed in each bookcase on average?
学校买来故事书127本，科技书73本，要把这些书放在4个书柜，平均每个书柜放多少本？
<gadget id="calculator">127 + 73</gadget>
<output>200</output>

<gadget id="calculator">200 / 4</gadget>
<output>50</output>

<result>50</result>