Based on Tesla's most recent balance sheet (below), what is the current ratio:

All figures in millions Cash Accounts Receivable Inventories Property Plant & Equipment Other Long Term Assets Total Assets Short Term Debt Current Portion of Long Term Debt Accounts Payable Accrued Payroll Other Current Liabilities Long Term Debt Other Long Term Liabilities Total Liabilities Shareholders' Equity Liabilities + Shareholders' Equity 2017 3,500 515 2,260 21,950 420 28,645 978 2,390 378 4,120 11,150 4,010 23,026 5,619 28,645