$1.$ Precision Testing $($PTest$)$ does fluid testing for several local hospitals. Consider their urine testing process. Each sample requires $12$ seconds to test, but after $300$ samples the equipment must be recalibrated. No samples can be tested during the recalibration process, and that process takes $30$ minutes. They receive $150$ samples per hour to test. What is PTest$$s capacity to test urine samples $($in samples per hour$)?$

$2.$ A printed circuit board $($PCB$)$ machine installs integrated circuits onto a board. Before starting to produce a board, the PCB machine requires a $20-$minute setup. Once in production, the PCB machine requires only $0\mathrm{.}15$ minute per board. Currently, the PCB machine produces $500$ boards between setups. Given this operating process, what is the capacity of the PCB machine $($in boards per minute$)?$