Chemistry: If I know the concentration of K, how do I calculate the concentration of K2O

For example, if I know the concentration of K to be 60 ppm, then what is the concentration of the oxide K2O?

What about if the concentration of Ti is 60 ppm and I want to calculate the concentration of TiO2?

Please explain step by step how to do it.

( I'm not one of those people trying to cheat on homework, by the way - I'm not even in a chemistry class - I'm just trying to figure something out )

The compound K2O has a molar mass of 2 K (2 x 39.1) + O (16.0) = 94.2 g/mole. The 2 K atoms contribute 78.2 of the 94.2.

60 ppm K x (K2O / 2K) = 60 ppm x (94.2 / 78.2) = 72 ppm K2O

TiO2 is the same thing. Ti = 47.4 g/mole and TiO2 is 79.4 g/mole.

60 ppm Ti x (TiO2 / Ti) = 60 ppm x (79.4 / 47.4) = 101 ppm TiO2