To build a road, 25% of the total length was repaired on the first day, and 60 meters of the total length (2/5) was repaired on the second day, and 150 meters remained unrepaired. How many meters were repaired on the first day?
修一条路，第一天修了全长的25%，第二天修了全长的(2/5)又60米，还剩下150米没有修，第一天修了多少米？
<gadget id="calculator">60 + 150</gadget>
<output>210</output>

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (1/4) - (2/5)</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">210 / (7/20)</gadget>
<output>600</output>

<gadget id="calculator">600 * (1/4)</gadget>
<output>150</output>

<result>150</result>