A cuboid is 5 cm long, 3 cm wide, and 2 cm high, and its smallest area is the largest surface area ((())/(())).
一个长方体长5厘米，宽3厘米，高2厘米，它最小的面积是最大面面积的((())/(()))．
<gadget id="calculator">3 * 2</gadget>
<output>6</output>

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

<gadget id="calculator">6 / 15</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>