Kelly SpA had cash receipts from customers in 2022 of €142,000. Cash payments for operating expenses were €97,000. Kelly has determined that at January 1, accounts receivable was €13,000, and prepaid expenses were €17,500. At December 31, accounts receivable was €18,600, and prepaid expenses were €23,200. Compute

(a) Service revenue 

(b) Operating expenses.