The engineering team repaired a road. On the first day, they built 150 meters, and on the second day, they repaired the whole (1/5) of the whole way. There are 450 meters left to be repaired. How long is the whole road?
工程队修一条路，第一天修了150米，第二天修了全程的(1/5)，还剩450米没修，这条路全程多长？
<gadget id="calculator">150 + 450</gadget>
<output>600</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">600 / (4/5)</gadget>
<output>750</output>

<result>750</result>