Of the three steel pipes, the first one is 1.5 times the second one and half the third one, and the third one is 1.6 meters longer than the second one. How many meters is the first steel pipe?
三根钢管，第一根是第二根的1.5倍，是第三根的一半，第三根比第二根长1.6米，第一根钢管有多少米．
<gadget id="calculator">1.5 * 2</gadget>
<output>3</output>

<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">1.6 / 2</gadget>
<output>0.8</output>

<gadget id="calculator">0.8 * 1.5</gadget>
<output>1.2</output>

<result>1.2</result>