The following data are given for labour costs of direct workers in a company for one week. Production hours 380 Idle time hours 20 Special order hours 30 Total hours 430 Rates per hour $6 basic, overtime premium $2 There are 10 direct workers in the company and basic wages apply to a normal working week of 40 hours . Overtime is worked to meet the general requirements of production, and the idle time and special order time are regarded as normal. What is the total amount to be charged as indirect costs of labour for the week ?