To build a road with a length of 2400 meters, the full length (1/4) was built on the first day, and the rest (1/3) was built on the second day. How many meters are left to be repaired?
修一条长2400米的公路，第一天修了全长的(1/4)，第二天修了余下的(1/3)，还剩多少米没修．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">2_400 * (1/4)</gadget>
<output>600</output>

<gadget id="calculator">2_400 - 600</gadget>
<output>1_800</output>

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

<gadget id="calculator">1_800 * (1/3)</gadget>
<output>600</output>

<gadget id="calculator">2_400 - 600 - 600</gadget>
<output>1_200</output>

<result>1_200</result>