There is a bundle of wires that is 20 meters long. The master worker used 0.85 meters for the first time, and 1.25 meters for the second time. How many meters is the wire shorter than before?
有一捆电线长20米，工人师傅第一次用去0.85米，第二次又用去1.25米，这时电线比原来短了多少米？
<gadget id="calculator">0.85 + 1.25</gadget>
<output>2.1</output>

<result>2.1</result>