Compute the solution of the following problem

Problem- Assume that the empirical formula of a bacterial cell can be given by C5H7O2NP0.2. Further assume that for every gram of glucose fed, the resulting cell growth yield is 0.5 grams.

Part 1- What is the amount of nitrogen needed to sustain 1 gram/L of cells?

Part 2- What is the amount of phosphorus needed to sustain the same concentration of cells in the reactor?

I want assistance to find the amount of nitrogen needed.