<image>In the renovation project of National Highway 207 in the Xiangyang section, it is necessary to excavate and build the road along the AC direction, as shown in the figure. To expedite the construction, working from the other side of the small hill simultaneously is required. From point B on AC, take ∠ABD = 140°, BD = 1,000 meters, ∠D = 50°. In order to make the excavation point E on the straight line AC, DE = (____) meters (trigonometric function values provided for reference: sin50° = 0.7660, cos50° = 0.6428, tan50° = 1.192).