The defined benefit pension plan of Best Value Transport included the following balance at January 1, 2021 ($ in millions): $720 $690 Projected benefit obligation at January 1, 2021 Plan assets at fair value at January 1, 2021 Prior service cost--- AOCI at January 1, 2021 Net gain---AOCI $40 $82 Information regarding the defined-benefit pension plan of Best Value Transport included the following for 2021 (S in millions): Service cost $43 Interest cost $11 Gain from change in actuarial estimates in PBO $9 Retiree benefits paid (end of year) $52 $21 $25 $69 Actual return on plan assets Expected return on plan assets Employer's cash contribution (end of year) Amortization of prior service costs---AOCI Amortization of net gain AOCI $4 SI What is Best Value's projected benefit obligation at December 31, 2021? Do not add dollar sign, do not add comma by yourself to your amount: round the answer to the whole rumber: enter your answer in willions)