A cuboid glass fish tank without a cover is 5 decimeters long, 3 decimeters wide, and 35 centimeters high. What is the minimum square decimeter of glass required to make two such tanks?
一个无盖的长方体玻璃鱼缸，长5分米，宽3分米，高35厘米．制作两个这样的鱼缸至少需要多少平方分米的玻璃？
<gadget id="calculator">5 * 3.5</gadget>
<output>17.5</output>

<gadget id="calculator">3 * 3.5</gadget>
<output>10.5</output>

<gadget id="calculator">17.5 + 10.5</gadget>
<output>28</output>

<gadget id="calculator">28 * 2</gadget>
<output>56</output>

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

<gadget id="calculator">56 + 15</gadget>
<output>71</output>

<gadget id="calculator">71 * 2</gadget>
<output>142</output>

<result>142</result>