Will be a long. Width. Paint is painted around an iron box with a height of 2.5 meters, 14 decimeters and 1 meter respectively. What is the area of the painted part in square decimeters?
将一个长．宽．高分别是2.5米、14分米、1米的铁箱四周涂上油漆，涂漆的部分面积是多少平方分米．
<gadget id="calculator">2.5 * 1 * 10 * 1 * 10 * 2</gadget>
<output>500</output>

<gadget id="calculator">14 * 1 * 10 * 2</gadget>
<output>280</output>

<gadget id="calculator">500 + 280</gadget>
<output>780</output>

<result>780</result>