Cut out the largest cube from a cuboid with a length of 9 cm, a width of 7 cm, and a height of 5 cm. What is the maximum surface area of the remaining part in square centimeters?
从一个长9厘米、宽7厘米、高5厘米的长方体中截下一个最大的立方体，剩下部分的表面积最大是多少平方厘米？
<gadget id="calculator">9 * 7</gadget>
<output>63</output>

<gadget id="calculator">9 * 5</gadget>
<output>45</output>

<gadget id="calculator">7 * 5</gadget>
<output>35</output>

<gadget id="calculator">63 + 45 + 35</gadget>
<output>143</output>

<gadget id="calculator">143 * 2</gadget>
<output>286</output>

<gadget id="calculator">5 * 5 * 2</gadget>
<output>50</output>

<gadget id="calculator">286 + 50</gadget>
<output>336</output>

<result>336</result>