Melissa recently paid $$610$ for round$-$trip airfare to San Francisco to attend a business conference for three days. Melissa also paid the following expenses: $$385$ fee to register for the conference, $$335$ per night for three nights' lodging, $$300$ for meals and $$175$ for cab fare.

Note: Do not round intermediate calculations. Round your final answers to the nearest whole dollar amount. Leave no answers blank. Enter zero if applicable.

c$.$ Suppose that Melissa made the trip to San Francisco primarily to visit the national parks and only attended the business conference as an incidental benefit of being present on the coast at that time. What amount of the airfare can Melissa deduct as a business expense?

Answer is complete but not entirely correct.

$\backslash$table$[[$Deductible$,],[$amount$,610$