35% of a 900-meter-long road has been repaired, and how many meters are left to be repaired?
一段长900米的路，修了35%，还剩多少米没修．
<gadget id="calculator">35 / 100</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">1 - (7/20)</gadget>
<output>13/20 = around 0.65</output>

<gadget id="calculator">900 * (13/20)</gadget>
<output>585</output>

<result>585</result>