A road was built in two days. On the first day, 45% of the total length was built, and on the second day, it was 15 meters longer than the first day. How long is this road?
修一条路，两天修完，第一天修了全长的45%，第二天比第一天多修15米，这条路有多长？
<gadget id="calculator">45 / 100</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">(9/20) * 2</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">1 - (9/10)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">15 / (1/10)</gadget>
<output>150</output>

<result>150</result>