Students go rowing. There are 132 boys and 138 girls. Each boat is limited to 9 people. How many boats are needed?
同学们去划船，男生有132人，女生有138人，每条船限乘9人，至少需要几条船？
<gadget id="calculator">132 + 138</gadget>
<output>270</output>

<gadget id="calculator">270 / 9</gadget>
<output>30</output>

<result>30</result>