Bill and Jane have been offered jobs where they will be paid strictly on commissions. They expect to receive 4% commissions on all sales of Solar Panels they close. Jane’s goal is to earn a gross salary of $55,000 a year. Bill’s goal is to earn a gross salary of $18,000 a year part-time. How much in Solar Panel sales would Bill and Jane need in order to reach their targeted salaries? Show your work.