Put a bamboo pole straight into the bottom of the water. The bamboo pole is 30 cm wet. Then turn the bamboo pole upside down and insert it into the water again. At this time, the wet part of the bamboo pole is 12 cm longer than (1/3) of the bamboo pole. What is the total length of the bamboo pole in centimeters?
把一根竹竿直插入水底，竹竿湿了30厘米，然后将竹竿倒过来，再插入水底，这时竹竿湿的部分比竹竿的(1/3)长12厘米，求竹竿全长多少厘米？
<gadget id="calculator">30 * 2</gadget>
<output>60</output>

<gadget id="calculator">60 - 12</gadget>
<output>48</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">48 / (1/3)</gadget>
<output>144</output>

<result>144</result>