"Selected Excellent Compositions for Primary School Students" is priced at 7.5 yuan each, and Mr. Chen buys this book for 150 yuan. How many books like this can you buy in total?
《小学生优秀作文选》每本售价7.5元，陈老师拿150元钱都买这本书，一共可以买多少本这样的书？
<gadget id="calculator">150 / 7.5</gadget>
<output>20</output>

<result>20</result>