Your company utilizes both employees (L) and specialized robots (R) in its production process. The hourly wage of employees is $18, and the hourly cost of operating a robot is $220. The table below describes how the number of each type of input affects output or product (in a marginal way).

Number of Marginal product Number of robots Marginal product employees (L) of labor (MPL) (R) of robots (MPR) 39.6 440 36.0 418 32.4 396 28.8 374 25.2 352 21.6 330 18.0 308