The Tube is a good place to work out your expenses.

On my way to Victoria station during a reasonably quiet time, I saw how people will leave a seat between each other if they can – this isn’t possible during the rush hour! The lady on the left attracted my attention, she seemed to be jotting down her expenses into a notebook as she was looking through a handful of receipts.
Medium: Digital drawing created on an iPhone 6 and using Adobe Draw app
Drawn: 10th March – 17th April 2017