How many $100 bills make $10,000?

Could you please elaborate on the following query: "How many individual bills of $100 denomination are required to reach a total sum of $10,000?" I'm curious to understand the calculation behind this concept. Is there a simple method to determine the number of bills needed, or does it involve more complex mathematical operations? Additionally, I'm interested in knowing if this principle applies to other denominations as well. Thank you for your assistance in clarifying this matter.