Labour costing

Sir can you please explain how to do this question. Company x employs two types of labour: skilled workers considered to be direct workers and semi-skilled workers considered to be indirect workers. Skilled workers are paid $10 per hour and semi-skilled $7.50 per hour. All employees work a standard 35 hour week. There are 7 skilled workers and 4 semi-skilled workers. The skilled workers have worked 50 hours of overtime this week, 20 hours on a specific order and 30 hours on general production. The semi-skilled workers have worked 20 hours of overtime, 10 hours on a specific order at a customer’s request and the remaining 10 hours to meet general production requirements. All overtime is paid at time and a half. Required a) What are the total direct labour costs for the week? b) What are the total indirect labour cost for the week? Thanks