If the students go rowing, there will be one more boat if there are 6 people in each boat. If there are 9 people in each boat, there will be one more boat. Ask how many people go boating?
同学们去划船，每船坐6人就差一条船，如果每船坐9人，就多一条船．问有多少人去划船？
<gadget id="calculator">6 + 9</gadget>
<output>15</output>

<gadget id="calculator">9 - 6</gadget>
<output>3</output>

<gadget id="calculator">15 / 3</gadget>
<output>5</output>

<gadget id="calculator">5 * 6</gadget>
<output>30</output>

<gadget id="calculator">30 + 6</gadget>
<output>36</output>

<result>36</result>