The Kollar Company has a defined benefit pension plan. Pension information concerning the fiscal years 2024 and 2025 are presented below ($ in millions): Information Provided by Pension Plan Actuary: a. Projected benefit obligation as of December 31, 2023 = $3,200. b. Prior service cost from plan amendment on January 2, 2024 = $600 (straight-line amortization for 10-year average remaining service period). c. Service cost for 2024 = $640. d. Service cost for 2025 = $690. e. Discount rate used by actuary on projected benefit obligation for 2024 and 2025 = 10%. f. Payments to retirees in 2024 = $500. g. Payments to retirees in 2025 = $570. h. No changes in actuarial assumptions or estimates. i. Net gainAOCI on January 1, 2024 = $370. j. Net gains and losses are amortized for 10 years in 2024 and 2025. Information Provided by Pension Fund Trustee: a. Plan asset balance at fair value on January 1, 2024 = $2,300. b. 2024 contributions = $660. c. 2025 contributions = $710. d. Expected long-term rate of return on plan assets = 12%. e. 2024 actual return on plan assets = $210. f. 2025 actual return on plan assets = $260. Required: Calculate pension expense for 2024 and 2025.