```
This vegetable supermarket has a membership system and a non-membership system. Each user pays a monthly membership fee of $20. Members get a 20% discount on all items on the 28th. The store sells soybeans at $2 per pound, pork at $16 per pound, and beef at $30 per pound. Without considering the membership fee, how much does a member need to pay if they buy three pounds of beef on the 27th, assuming they haven't purchased anything before?
```