To build a road, the construction team repairs (1/5) km every day, and (1/25) of this road is repaired in 3 days of construction. How long is this road?
修一条公路，施工队每天修(1/5)km，施工3天修了这条路的(1/25)，这条公路有多长？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 / 25</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">3 / (1/25)</gadget>
<output>75</output>

<gadget id="calculator">(1/5) * 75</gadget>
<output>15</output>

<result>15</result>