A section of expressway was built with a total length of 45 kilometers, and 2 kilometers were repaired in 10 days after starting construction. At this speed, how many days will it take to complete the construction of this section of expressway? (Answer with proportional knowledge)
修一段高速公路，总长45千米，开工10天修了2千米，照这样的速度，修完这段高速公路，还要多少天？(用比例知识解答)
<gadget id="calculator">45 - 2</gadget>
<output>43</output>

<gadget id="calculator">2 / 10</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">43 / (1/5)</gadget>
<output>215</output>

<result>215</result>