What is the best way to statistically analyze a score system and number of steps for users?

I'm trying to analyze two measurements, the number of steps it takes the user to complete a task on a website, and a ranking rubric of 1 - 3 (1 is simple and 3 is considered difficult) for each step of how difficult the task is for them to complete. At the end we are adding up the number of steps and total difficulty, so there will be two totals. What would be the best way to have a final number for each task? I could divide the difficulty ranking by the number of steps but wondered if there's a better way to go about it.