Salinity is the amount of salt dissolved in a body of water. A sample of lake water was found to contain 255 ppm K⁺, 7600 ppm Na⁺, 1020 ppm Mg²⁺, 13800 ppm Cl^–, 214 ppm Ca²⁺, 1900 ppm SO₄^2–, and 289 ppm HCO₃^–. Calculate the total molality of ions in the lake.