The approximate heights of two of the world's tallest mountains are given. Determine which is the taller mountain and by how many meters. Round to the nearest meter.
(1 in=2.54 cm; 1 ft= 30.48 cm; 1 yd ≈ 0.9144 m; 1 mi ≈ 1.6 km)
Upper K2: 8611 meters and Batura Sar: 25,574 feet