Due to conversion formula in the upper paragraph if you want to convert Kelvins to degrees Fahrenheit you have to multiply Kelvins by 9 divide the result by 5 and then subtract 459.67.
So the conversion of 5800 K will be: ((5800 × 9) ÷ 5) - 459.67 = (52200 ÷ 5 ) - 459.67 = 10440 - 459.67 = 9980.33 °F