The underground part of Nanjing Metro Line 1 is about 14.3 kilometers long, which is 0.7 kilometers less than twice the length of the aboveground part. About how many kilometers long is the above ground part? (solution by equation)
南京地铁一号线地下部分大约长14.3千米，比地上部分的2倍少0.7千米．地上部分大约长多少千米？(用方程解)
<gadget id="calculator">14.3 + 0.7</gadget>
<output>15</output>

<gadget id="calculator">15 / 2</gadget>
<output>15/2 = around 7.5</output>

<result>15/2 = around 7.5</result>