<human>:  How can I calculate the total cost of my monthly bills?
<bot>: To calculate the total cost of your monthly bills, add up all the individual costs of each bill. For example, if you have a water bill, a phone bill, and an electricity bill, add the cost of all three together to get your total cost. If any of your bills are billed annually, be sure to divide the cost by the number of months in the year to get your monthly total.