Hello, can someone help with the following problem? Thank you,

Determine the basis of stock in the hands of the shareholder in each of the following instances. Assume that the 80% rule is met in all cases. a. Contribution of property with a basis of $2,000 and a FMV of $2,800. b. Contribution of property with a basis of $6,000 and a FMV of $7,600. The stockholder also received $1,000 cash from the corporation as part of the stock transaction. c. Contribution of property with a basis of $16,400 and a FMV of $25,000. The stockholder also received property with a FMV of $3,400 from the corporation as part of the stock transaction. d. Contribution of a building with a FMV of $400,000, a mortgage (assumed by the corporation) of $200,000, and a basis of $250,000. e. Contribution of a building with a FMV of $3,400,000, a mortgage (assumed by the corporation) of $2,000,000, and a basis of $1,270,000.