实际利率法-利息收入计算

def solve(____):
    interest_income = book_value_beginning * effective_rate
    coupon_interest = face_value * coupon_rate
    amortization = interest_income - coupon_interest
    book_value_ending = book_value_beginning + amortization
    return {"____": interest_income, "____": coupon_interest, "____": amortization, "____": book_value_ending}