Clem is married and is a skilled carpenter. Clem's wife, Wanda, works part time as a substitute grade school teacher. Determine the amount of Clem's expenses that are deductible for AGI this year (if any) under the following independent circumstances: (Leave no answer blank. Enter zero if applicable.)

a. Clem is self-employed, and this year he incurred $525 in expenses for tools and supplies related to his job. Because neither was covered by a qualified health plan, Wanda paid health insurance premiums of $3,600 to provide coverage for herself and Clem (not through an exchange).