Hongguang Village built a 1,600-meter-long canal. In the first week, 25% of the total length was repaired, and the rest (2/3) was repaired in the second week. How many meters are left to be repaired?
红光村修一条长为1600米的水渠，第一周修了全长的25%，第二周修了余下的(2/3)，还剩下多少米没有修？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1_600 * (1/4)</gadget>
<output>400</output>

<gadget id="calculator">1_600 - 400</gadget>
<output>1_200</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1_200 * (2/3)</gadget>
<output>800</output>

<gadget id="calculator">1_600 - 400 - 800</gadget>
<output>400</output>

<result>400</result>