A highway was repaired 750 meters in the first week, and its (2/5) was repaired in the second week, exactly half of the total length. How many meters is this road?
一条公路第一周修了750米，第二周修了它的(2/5)，恰好修好全长的一半．这条公路有多少米？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

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

<gadget id="calculator">(1/2) - (2/5)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">750 / (1/10)</gadget>
<output>7_500</output>

<result>7_500</result>