The 170,000 doesn't have a precise unit, it could be losses in market cap, cash reserves, advertiser revenue, operating costs, literally anything.

I'm merely putting the number in perspective. 6 digits isn't really something that's particularly concerning on any Facebook spreadsheet.

I'm not sure what you mean by that. The 170,000 does have a precise unit - it's dollars lost in cash, as stated in the comment you were replying to.

The amount of time taken for Facebook to fold in minutes is represented by $TOTAL_CASH ÷ $170,000. There's nothing mystical about it.

But $TOTAL_CASH is entirely different from, and unrelated to, market cap. Market cap does not come into this at all, in any way.