A wire is 5.6 meters long, 2.3 meters are used up, how much shorter is the used one than the rest?
一根铁丝长5.6米，用去2.3米，用去的比剩下的短多少米？
<gadget id="calculator">5.6 - 2.3 - 2.3</gadget>
<output>1</output>

<result>1</result>