A road has been built for 600 meters, and the unrepaired road is 150 meters less than (7/10) of this road. How many meters is this road?
修一条路，已经修了600米，这时没修的比这条路的(7/10)少150米．这条路长多少米？
<gadget id="calculator">600 - 150</gadget>
<output>450</output>

<gadget id="calculator">7 / 10</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">1 - (7/10)</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">450 / (3/10)</gadget>
<output>1_500</output>

<result>1_500</result>