A cashier at McDonald's - Not the most excting job - Common app short answer

Hey guys! This is my short answer and I would appreciate some feedback on it.
I'm really close to the deadline and i need to put this essay on the common app real soon so please tell me if there is anything i should fix on here.

My sophomore year, I held a job as a cashier at McDonald's to save up money for my first car. It wasn't the most exciting job in the world. My main duties involved taking orders from customers, operating the cash register and frequently wiping ketchup off of tables. I would come back home with grease clinging to my clothes and the smell of fries emanating from me for the rest of the day. The pay was minimum and the work was often monotonous. However, looking back, I 'am grateful for the opportunity I had at my job to interact with all kinds of people and develop relationships with my coworkers. My job at Mcdonald's gave me a taste of what it would be like to stand on my own feet as I learned to manage and handle my own money. Initially, I had looked down at the thought of working at a fast food restaurant, but the experience I gained made me realize how a seemingly mundane job can have its own rewards.

apply the concept of having this menial job to something more "out there" so to speak.
something that involves the university maybe?
i'm not too sure what the prompt is so i don't know what they're asking of you.

the prompt just asks us to elaborate on one of the ECs i listed i my common app
Here it is:
The short answer essay prompt on the Common Application states, "Please briefly elaborate on one of your extracurricular activities or work experiences in the space below or on an attached sheet (150 words or fewer)."