5yrsx4myr=20m
5 year deals are minimum salary of 5m. You can do 5 years at 5m or 4 years at 5m whatever you prefer.
This gives min/max per year on all contract offers:
Salary Per Year - Min & Max Years
$6.5m+ - 3 to 5 years
$5 to $6.4m - 2 to 5 years
$3.5 to $4.9m - 2 to 4 years
$2 to $3.4m - 1 to 3 years
$0.5 to $1.9m - 1 to 2 years