A rectangular iron sheet is 50 cm long and 40 cm wide. Cut off a square with a side length of 5 cm from each of its four corners and fold it into a cuboid. What are the surface area and volume of the cuboid?
一个长方形铁皮，长50厘米、宽40厘米，在它的四个角上分别截去一个边长为5厘米的正方形，折成一个长方体，长方体的表面积和体积各是多少？
<gadget id="calculator">5 * 2</gadget>
<output>10</output>

<gadget id="calculator">50 - 10</gadget>
<output>40</output>

<gadget id="calculator">40 - 10</gadget>
<output>30</output>

<gadget id="calculator">40 * 30 * 5</gadget>
<output>6_000</output>

<result>6_000</result>