An excavator digs the road. In the first hour, it has dug (2/5). In the second hour, it has dug 135 meters more than in the first hour. At this time, there are still 15 meters left to be dug. How many meters is the total length of this road?
一挖土机挖路，第一小时挖了(2/5)，第二小时比第一小时多挖135米，这时还剩下15米没挖，这条路全长多少米？
<gadget id="calculator">15 + 135</gadget>
<output>150</output>

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

<gadget id="calculator">1 - (2/5) - (2/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">150 / (1/5)</gadget>
<output>750</output>

<result>750</result>