If a piece of cylindrical material is cut into two cylinders, its surface area will increase by 6.28 square decimeters. If it is split along the diameter, its surface area will increase by 80 square meters. Find the surface area of the original cylinder?
一段圆柱体材料如果截成两个圆柱它的表面积增加6.28平方分米，如果沿着直径劈开，它的表面积就增加了80平方米，求原来圆柱体的表面积？
<gadget id="calculator">80 / 2</gadget>
<output>40</output>

<gadget id="calculator">3.14 * 40</gadget>
<output>125.6</output>

<gadget id="calculator">125.6 + 6.28</gadget>
<output>131.88</output>

<result>131.88</result>