How many square meters of glass is needed to make a cubic goldfish tank without a cover, the side length is (1/2) meter.
做一个无盖的正方体金鱼缸，棱长是(1/2)米，至少需要多少平方米的玻璃．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) * (1/2) * 5</gadget>
<output>5/4 = around 1.25</output>

<result>5/4 = around 1.25</result>