Xiaoming's family is going to make a fish tank (without a cover), which is 12 decimeters long, 5 decimeters wide, and 6 decimeters high. How many square decimeters of glass material is required?
小明家准备做一个鱼缸(无盖)，长12分米，宽5分米，高6分米．至少需要多少平方分米的玻璃材料？
<gadget id="calculator">12 * 5</gadget>
<output>60</output>

<gadget id="calculator">6 * 5 * 2</gadget>
<output>60</output>

<gadget id="calculator">12 * 6 * 2</gadget>
<output>144</output>

<gadget id="calculator">60 + 60 + 144</gadget>
<output>264</output>

<result>264</result>