To build a 6-kilometer road, 450 meters were repaired in 3 days after starting construction. According to this calculation, how many days are left?
修一条6千米公路，开工3天修了450米，照这样计算，余下的还要多少天？
<gadget id="calculator">6 * 1_000</gadget>
<output>6_000</output>

<gadget id="calculator">6_000 - 450</gadget>
<output>5_550</output>

<gadget id="calculator">450 / 3</gadget>
<output>150</output>

<gadget id="calculator">5_550 / 150</gadget>
<output>37</output>

<result>37</result>