Dad is going to use two ropes with a length of 1.27 meters to tie up the newspapers. The joints share 0.25 meters of rope. How many meters is the length of the rope after it is connected?
爸爸准备用两条长度都是1.27米的绳子接起来捆扎报纸，接口处共用去绳子0.25米，接好后的绳子长多少米．
<gadget id="calculator">1.27 - 0.25</gadget>
<output>1.02</output>

<gadget id="calculator">1.27 + 1.02</gadget>
<output>2.29</output>

<result>2.29</result>