If a square log with a length of 3 meters and a base area of 50 square centimeters is sawn into how many pieces, the surface area will increase by 300 square centimeters.
把长3米，底面积为50平方厘米的方木锯成多少段段，表面积增加300平方厘米．
<gadget id="calculator">50 * 2</gadget>
<output>100</output>

<gadget id="calculator">300 / 100</gadget>
<output>3</output>

<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<result>4</result>