section of square steel is 1.5m long. After sawing it into two equal sections, the surface area increases by 18cm**2. What is the volume of the original section of steel?
一段方钢长1.5m，把它锯成相等的两段后表面积比原来增加18cm**2，原来这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">9 * 150</gadget>
<output>1_350</output>

<result>1_350</result>