Please help to show me how to do this step by step.

1) Review the invoice (link below) and data (starting on line 5) - fill in the Workers Comp and Employers Liability (column D) and the Package Premium (column E) that should be charged to each site. Should calculate WC & Emp Liab Premium based on payroll expenses Should calculate Package Premium based on number of students WC & Emp Liability Invoice Invoice Amount Invoice Amount WC & Emp Liab Premium Package Premium School Summit Prep Everest Rainier Tahoma Shasta Denali K2 Payroll Expenses $4.000.000 $3,800,000 $3,500,000 $3,100,000 $2,500,000 $2,000,000 $1,250,000 Number of Students 420 400 350 300 250 200 100 0 0 This Proposal includes the following Coverages: Business and Management Indemnity O Directors and Officers Liability (D&O) O Employment Practices Liability (EPL) o Fiduciary Liability General Liability O Educators Legal Liability (Educator's E&O) o Employee Benefits Liability o Sexual Abuse Liability Business Auto Liability and Property Damage Excess Liability Property Crime Workers' Compensation and Employers' Liability Domestic Terrorism Liability Student Accident Liability Cyber Liability . . Package Premium: $110,645.48 $132,788.63 Workers' Compensation & Employers' Liability Premium: Total Estimated Annual Premium: $243,434.11 Choose one payment option: Payment In Full $243,434.11 Due Now Installment Plan: Deposit (25%) $60,858.53 Due Now Monthly Installment: $20,286.18 August 1, 2014 8 additional installments due the 1st of every month