A process is depicted in the picture. After being processed in the first station, a box needs to be processed at either Machine A or Machine B for the parallel line. The box is then processed at Stations $3$ and $4$ before leaving the production line. The process time of each station$/$machine is indicated in the flowchart $($e$.$g$.,5$ min$/$box means that the process time is $5$ minutes to process each box at the machine$/$station$).$ What is the process time of this system measured in min$/$box$?$

Note:

$1-$ Do not include the unit of measure in the answer. For instance, if the answer is $4\mathrm{.}6$ min$/$box only enter $4\mathrm{.}6.$

$2-$ Enter your answer as a decimal number and not a fraction. For instance, if the answer is $1/4$ enter $0\mathrm{.}25.$

$3-$ Round your final answer to $2$ decimal places.

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