To build a road (9/5) kilometers long, (1/3) was repaired in the first week, and (2/5) kilometers were repaired in the second week, how many kilometers are left to be repaired?
修一条长(9/5)千米的公路，第一周修了(1/3)，第二周修了(2/5)千米，还剩多少千米没修？
<gadget id="calculator">9 / 5</gadget>
<output>9/5 = around 1.8</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(9/5) * (2/3)</gadget>
<output>6/5 = around 1.2</output>

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

<gadget id="calculator">(6/5) - (2/5)</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>