The length, width, and height of a cuboid are 5 cm, 3 cm, and 7 cm respectively. How many square centimeters is the area of the largest side of the cuboid greater than the area of the smallest side?
一个长方体的长、宽、高分别是5厘米、3厘米、7厘米，这个长方体最大面的面积比最小面的面积多多少平方厘米？
<gadget id="calculator">7 * 5</gadget>
<output>35</output>

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

<gadget id="calculator">35 - 15</gadget>
<output>20</output>

<result>20</result>