To build a road with a length of 2,400 kilometers, the full length (1/6) was repaired in the first month, and the rest (2/5) was repaired in the second month. How many meters are left to be repaired?
修一条长2400千米的公路，第一个月修了全长的(1/6)，第二个月修了余下的(2/5)，还剩下多少米没有修？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 - (1/6)</gadget>
<output>5/6 = around 0.833333</output>

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

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">2_400 * (5/6) * (3/5) * 1_000</gadget>
<output>1_200_000</output>

<result>1_200_000</result>