To calculate how much JP Morgan earns per month, we would need to know their total revenue and expenses for a given period (e.g., one month). Once we have that information, we could subtract their expenses from their revenue to get their profit or loss for that period. If we only had revenue information, we could multiply it by a factor such as 12 to estimate their annual revenue, which would give us an idea of their overall financial performance. However, without more specific information about JP Morgan's financials, it is difficult to provide a precise answer to this request.