How to manage pocket money for high school students these days

(1)An 18-year-old’s awesome gap investment
(2)Underage A
(3)1.1 billion apartment purchase
(4)500 Million Gap Investment in Enrollment Deposit
(5)Unit raw data Ministry of Land, Infrastructure and Transport
(6)The price of the apartment is 1.1 billion won
(7)Receiving 500 million won as a tenant on a deposit basis
(8)200 million won from 200 million parents and 11.1 billion won from relatives
(9)a cash transfer to
(10)I borrow money without interest because of the transfer tax
(11)The price of the house rose to 1.6 billion won
(12)a 600 million won market profit
(13)an allowance of 600 million won
(14)The profit margin is a bonus