A company is considering two insurance plans with the following types of coverage and premiums:

	Plan A	Plan B
Fire/Theft	$$21000$	$$34000$
Liability	$$198000$	$$136000$
Monthly Premium	$$70$	$$56$

Premiums are sold in units. For example, one can buy one unit of plan A insurance for $\$70.00$ per month and receive $\$21{,}000.00$ in Theft/Fire insurance. Two units of plan A insurance cost $\$140.00$ per month and give $\$42{,}000.00$ in Theft/Fire insurance. The company wants at least $\$707{,}000.00$ in coverage for Theft/Fire insurance and $\$4{,}082{,}000.00$ in coverage for liability insurance.

How many units of each plan should be purchased to meet the needs of the company while minimizing cost?
The company should purchase units of plan A and units of plan B.

What is the minimum monthly premium for the company? (Note: your answer is a dollar amount and should include a dollar symbol).