I want a detailed solution with the need to show the method of calculation

Q2 Palestine includes one coupon in each box of soap powder that it sells. In return for 8 coupons, the customers receive a premium. The premium cost Palestine $1.5 each. Palestine estimates that 70% of the coupons will be redeemed. Data for 2020 and 2021 are as follows: 1. The premium expense for 2020 is 2. The premium expense for 2021 is 3. The premium liability at December 31,2021 is 4. Journalize the required entries for 2020 2020Sabhsatuspremnilnutp20000premnilumexppremmilnIhratary311122021 wherase "Premaim Inverfory cash premunim expanse. premim Itu