To build a 1,000-meter-long road, 40% of the total length was repaired in the first month, and 30% of the first month was repaired in the second month. How many meters are left to be repaired?
修一条长1000米的公路，第一个月修了全长的40%，第二个月修的是第一个月的30%，还剩多少米没修？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(2/5) * (3/10)</gadget>
<output>3/25 = around 0.12</output>

<gadget id="calculator">1 - (2/5) - (3/25)</gadget>
<output>12/25 = around 0.48</output>

<gadget id="calculator">1_000 * (12/25)</gadget>
<output>480</output>

<result>480</result>