The engineering team paved a road, and the paved road accounted for 35% of the road. If another 300 meters were paved, it would just pave half of the road. How many meters has the engineering team laid?
工程队铺一条公路，已铺好的占这条路的35%，如果再铺300米就刚好铺了这条公路的一半．工程队已铺多少米？
<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">35 / 100</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">(1/2) - (7/20)</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">300 / (3/20)</gadget>
<output>2_000</output>

<gadget id="calculator">2_000 * (7/20)</gadget>
<output>700</output>

<result>700</result>