A plastic rope is 4.5 meters long, cut off (2/5) for the first time, and cut off (2/5) meters for the second time, how many meters are left in this plastic rope?
一条塑料绳长4.5米，第一次剪去(2/5)，第二次剪去(2/5)米，这条塑料绳还剩下多少米？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">4.5 * (2/5)</gadget>
<output>1.8</output>

<gadget id="calculator">4.5 - 1.8 - (2/5)</gadget>
<output>2.3</output>

<result>2.3</result>