There are 45 students swimming in the swimming pool, among them (3/5) are male students. How many male students are there?
游泳池里有45名学生在游泳，其中(3/5)是男同学．男同学有多少人？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">45 * (3/5)</gadget>
<output>27</output>

<result>27</result>