this is gaining views and likes, i will explain it (base on how i understand it)
1. 22,000 per ticket, which they bought 2 ticket so it cost 44,000(original price with sttc is 12,720)
2. 22,000 - 12,720 = 9,280
3. 9,280 per ticket • 9,280 + 9,280 = 18,56 fee (for both ticket)