To build a highway, Team A has built 60% of the total length, and Team B has built 30% of the total length. Team A has built 27 kilometers more than Team B. How long is this road in kilometers?
修一条高速公路，甲队修了全长的60%，乙队修了全长的30%，甲队比乙队多修27千米．这条公路全长多少千米？
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(3/5) - (3/10)</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">27 / (3/10)</gadget>
<output>90</output>

<result>90</result>