An engineering team repairs a 1,600-meter-long road, and 75% of the road has been repaired. How many meters are left to be repaired?
一个工程队修一条长1600米的公路，已经修好这条路的75%，还剩多少米没有修？
<gadget id="calculator">75 / 100</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 - (3/4)</gadget>
<output>1/4 = around 0.25</output>

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

<result>400</result>