A section of square steel is 1.5 meters long and has a square cross section. After sawing it into two equal sections, the surface area increases by 18 square centimeters. What is the volume of each section of steel?
一段方钢长1.5米，横截面是正方形，把它锯成相等的两段后表面积比原来增加18平方厘米，每段钢材的体积是多少．
<gadget id="calculator">18 / 2</gadget>
<output>9</output>

<gadget id="calculator">1.5 * 100</gadget>
<output>150</output>

<gadget id="calculator">150 / 2</gadget>
<output>75</output>

<gadget id="calculator">9 * 75</gadget>
<output>675</output>

<result>675</result>