If a cuboid wood with a length of 20 cm, a width of 5 cm, and a height of 3 cm is sawed into two sections along the cross section, how much will the surface area increase?
把一根长20厘米，宽5厘米，高3厘米的长方体木料沿横截面锯成2段，表面积增加多少？
<gadget id="calculator">5 * 3 * 2</gadget>
<output>30</output>

<result>30</result>