This IRS page explains how to convert the foreign currency to report business expenses:
https://www.irs.gov/individuals/international-taxpayers/us-citizens-and-resident-aliens-abroad
This page lists the kinds of expenses you can deduct:
https://www.irs.gov/taxtopics/tc511
In TurboTax, you will come to Business Expenses. Select Other Common Business Expenses to find a variety of expense areas such as Business Travel, Communication, Meals and Entertainment, where you can enter your expenses.
