To build a road, the ratio of the length of the road that has been repaired to the length of the road that has not been repaired is 2:3. How much has the road been repaired?
修一条公路，已修的和未修的长度的比是2：3，这条公路已修了多少
<gadget id="calculator">2 + 3</gadget>
<output>5</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>