To calculate 0 days, 7 hours, and 48 minutes in the future, you would start by converting each unit of time to a common denominator, typically hours. One day consists of 24 hours, so 0 days equate to 0 hours. Seven hours remain the same. To convert 48 minutes to hours, you would divide by 60 (minutes in an hour), giving you 0.8 hours. Summing 0 hours + 7 hours + 0.8 hours gives a total of 7.8 hours.