To build a road with a length of 1200 meters, the full length (2/5) will be built on the first day, and the rest will be completed within 3 days. How many meters will be repaired on average per day for the rest?
修一条长1200米的公路，第一天修全长的(2/5)，余下的要3天内完成，余下的平均每天修多少米？
<gadget id="calculator">2 / 5</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">(3/5) / 3</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1_200 * (1/5)</gadget>
<output>240</output>

<result>240</result>