Welcome to living in the upper 30% of rich people.
Only 30% of people who are full-time workers (so this specifically excludes all part-time workers, those not working, retired etc who earn much less) earn over £47k.
As of April this year, the median pay for full-time workers (ie the 50% level) was £39,863. So, 50% of all full-time workers earn less than this amount.
[Source - Office for National Statistics: Employee earnings in the UK 2025, 23 Oct 2025]
£39,863 gives a take home pay (after tax, NI and auto-enrolled pension) of £2,573 per month
"Most people I know earn over £45k"
I have also read threads where people have commented things like "I don't know anybody who earns over £45k per year"