A section of road was repaired on the first day (1/5), and on the second day it was repaired 17 meters less than the first day, leaving 437 meters. How many meters were repaired on the first day?
修一段公路，第一天修了(1/5)，第二天比第一天少修了17米，还剩下437米，第一天修了多少米？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">437 - 17</gadget>
<output>420</output>

<gadget id="calculator">1 - (1/5) - (1/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">420 / (3/5)</gadget>
<output>700</output>

<gadget id="calculator">(1/5) * 700</gadget>
<output>140</output>

<result>140</result>