If a piece of wood with a length of 2 meters and a cross-sectional area of 0.5 square meters is sawn along the length into three equal sections, how much square meters will the surface area increase?
把一个长2米，横截面积是0.5平方米的木块沿长锯成长相等的三段，表面积增加多少平方米．
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">0.5 * 2 * 2</gadget>
<output>2</output>

<result>2</result>