A cuboid fish tank without a cover is 8 decimeters long, 4 decimeters wide, and 7 decimeters high. What is the minimum square decimeter of glass used to make this fish tank?
一个无盖的长方体鱼缸，长8分米，宽4分米，高7分米．制作这个鱼缸至少用玻璃多少平方分米？
<gadget id="calculator">8 * 4</gadget>
<output>32</output>

<gadget id="calculator">8 * 7 * 2</gadget>
<output>112</output>

<gadget id="calculator">7 * 4 * 2</gadget>
<output>56</output>

<gadget id="calculator">32 + 112 + 56</gadget>
<output>200</output>

<result>200</result>