Startup Idea: Automated Mileage Calculation and Logging System

Startup idea to develop an application capable of calculating the distance from a home office to various meeting locations noted on a calendar. The program should be able to export data to Excel or a similar platform for easy mileage tracking and reimbursement calculations.

a program that can calculate distance from home office to meeting locations that are indicated on a calendar and download to excel or other program to calculate and log mileage.

Working in an environment where I travel from my home office location to multiple offices within a district. The corporate pays for travel but its up to me to keep the logs and calculate mileage reimbursement. It would be good if this was something automatically done based upon the calendar meetings at those locations.