This is an adjusted entry. im trying to understand how to caculate the nimbers to get the answer to letter C

window the information and financial data shown below, record the adjusting entries for Pick Services. Be sure to click on the Adjusting entries button (Adjusting JE) on the tool bar. Adjusting entries must not be entered using the Daily entries procedure. Any corrections to adjusting entries must also be entered using the Adjusting entries option. Adjusting entries will not require documentation entries, such as check numbers or vendor or customer numbers. All entries must be recorded as of June 30. A. A 6-month insurance policy was purchased on June 4th. Calculate and record one month's insurance expense for the month. B. Rent was prepaid for 3 months on June 3. Calculate and record one month's rent expense for the month. C. Office supplies on hand at the end of the month total $622.50. Calculate and record the office supplies expense for the month. D. Cleaning supplies on hand at the end of the month total $3,460.00. Calculate and record the cleaning supplies expense for the month. E. Repair supplies on hand at the end of the month total $1,200.00. Calculate and record the repair supplies expense for the month. F. Two hundred ($200.00) dollars of the advertising purchased on June 24 from the Grass Valley Gazette will not appear in the newspaper until after July 10. Record the amount of prepaid advertising on June 30. G. The cleaning equipment purchased for $8,050.00 on June 3 has a 6-year life and a salvage value of $850.00 Calculate and record the straight-line cleaning equipment depreciation expense for the month. H. The truck purchased for $18,500.00 on June 4 has an 8-year life and a salvage value of $4,100.00. Calculate and record the straight-line truck depreciation expense for the month. hann enrrartly entered, click on the General Ledger tab