tax question, the answer that is currently there is wrong

Melissa recently paid $600 for round trip airfare to San Francisco to attend a three-day business conference. Melissa also paid the followirig expenses: a $280 fee to register for the conference, $330 per night for three nights' lodging. 550 per day for meals she cooked herself, and $175 for cab fare. Suppose that while Melissa was on the coast, she also spent four days sightseeing at the national parks in the area. To do the sightseeing, she paid $1,470 for transportation, $1,095 for lodging, and $250 for meals during this part of her trip, which she considers personal in nature. What amount of the total costs can Melissa deduct as business expenses