A road is 1,000 meters long and 40% of it has been repaired. How many meters are left to be repaired?
一条公路长1000米，已经修了40%，还剩多少米没修？
<gadget id="calculator">40 / 100</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">1_000 * (3/5)</gadget>
<output>600</output>

<result>600</result>