cuboid glass fish tank without a cover is 80 cm long, 50 cm wide and 50 cm high. What is the minimum area of glass needed to make this fish tank?
一个无盖长方体玻璃鱼缸，长80厘米，宽和高都是50厘米，做这个鱼缸至少要多大面积的玻璃？
<gadget id="calculator">4_000 + 8_000 + 2_000</gadget>
<output>14_000</output>

<result>14_000</result>