There are 9 blue balloons and 3 times as many red balloons as blue balloons. How many balloons are there in total?
蓝气球有9个，红气球是蓝气球的3倍，一共有气球多少个．
<gadget id="calculator">9 * 3</gadget>
<output>27</output>

<gadget id="calculator">27 + 9</gadget>
<output>36</output>

<result>36</result>