There are 42 students going boating, each boat can accommodate 6 people, and the rent is 9 yuan. How much does it cost to rent a boat?
有42个同学去划船，每条船可以坐6人，租金9元，一共需要多少钱租船？
<gadget id="calculator">42 / 6</gadget>
<output>7</output>

<gadget id="calculator">7 * 9</gadget>
<output>63</output>

<result>63</result>