For a road, 2% of its total length was repaired on the first day and 35% of its length was repaired on the second day, and 30% less was repaired on the first day than on the second day. How many meters is it?
一条公路，第一天修了全长的2%第天修了长的35%，第一天比第少修30，有多少米？
<gadget id="calculator">35 / 100</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(7/20) - (1/5)</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">300 / (3/20)</gadget>
<output>2_000</output>

<result>2_000</result>