For a cuboid, if its length increases by 2 cm, its volume increases by 20 cubic centimeters; if its width increases by 3 cm, its volume increases by 60 cubic centimeters; if its height increases by 5 cm, its volume increases by 40 cubic centimeters. Please answer: What is the surface area of this cuboid in square centimeters?
一个长方体，如果它的长增加2厘米，体积就增加20立方厘米；如果宽增加3厘米，体积就增加60立方厘米；如果高增加5厘米，体积就增加40立方厘米．请回答：原来这个长方体的表面积是多少平方厘米．
<gadget id="calculator">8 + 10 + 20</gadget>
<output>38</output>

<gadget id="calculator">38 * 2</gadget>
<output>76</output>

<result>76</result>