How much money does the band get if: 309 presales; 185 walk-ups; deal 18/20 + bf pre 20/22 door less $275 + prod?

The question seems to be about a band's earnings from a concert, but it's not entirely clear. Here's a possible interpretation:

1. The band sells 309 presale tickets. If the band's deal is 18/20 + bf (booking fee) for presale tickets, this means they get 18 out of every 20 dollars from each presale ticket. If we assume the booking fee is included in the $20 ticket price, the band gets$18 per ticket. So, for 309 presale tickets, the band earns 309 * $18 =$5,562.

2. The band also sells 185 walk-up tickets. If the deal is 20/22 for walk-up tickets, this means they get 20 out of every 22 dollars from each walk-up ticket. So, for 185 walk-up tickets, the band earns 185 * $20 =$3,700.

3. The phrase "less $275 + prod" could mean that the band has to pay$275 plus production costs. Without knowing the production costs, we can't calculate this part. But we can say that the band's earnings would be $5,562 (from presale tickets) +$3,700 (from walk-up tickets) - $275 - production costs.

Please provide more details if this interpretation is incorrect.