chargeable gain amouunt before nil rate band

amir died 0n 1 February 2023. during his life he made two life time gifts
on 30 November 2015 he gave 200000 to his son
on 15 June 2016 he gave 350000 to his daughter

requirement:
what is the correct chargeable gain amount of the above gifts before the deduction of nil rate band which become chargeable as a result of amir death

my answer is both are exempt because 7 years before of amir death

but kaplan exempt first one 30 November
and on second gift they deduct 3k annual exemption and calculate the answer as 347 k
kaplan exam kit question no 194