Ticket price for visiting the ecological amusement park: Adults: 40 yuan/person; Children: ? Yuan / person. The ratio of adult ticket price to child ticket price in the ecological amusement park is 4:3. What is the fare for children?
生态游乐园参观票价：成人：40元/人；儿童：？元/人．生态游乐园的成人票价与儿童票价比是4：3．儿童的票价是多少？
<gadget id="calculator">4 / 3</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">40 / (4/3)</gadget>
<output>30</output>

<result>30</result>