This is an example of a simile, a comparison between two things using the words "like" or "as." "Gloomy as the night" is the simile here, since his sadness is being compared to nighttime.
I'm not sure exactly what your looking for there but if you were to go upon the procedures to solve for the variable which is n in my work that would be your answer
Answer:
because it's important thanks I got a virtuoso rank!!!!!!!!!!!!!!!!!!!
To view the paperwork for Mother Paula’s construction