The math here is awkward to visualise because the numbers are multiplying, but does your $5-6 for 2017 overall require them to be above Facebook's current $7.16

The math here is awkward to visualise because the numbers are multiplying, but does your $5-6 for 2017 overall require them to be above Facebook's current $7.16 in at least Q4 '17? That seems really ambitious, but I might be reading this wrong. For reference, could you give a ballpark of where you see Facebook's $/user for 2017?