Varies from person to person
Any calorie counter that considers your height and weight will give you the most accurate calories burned. Many of the new treadmills that you can purchase have this option, allowing the best accuracy for your exercise.
The calories burned when walking depends on your weight and how fast you are walking, so it would be almost impossible to estimate the calories (or partial calories) burned in only one step. The calories burned when walking are usually stated in the distance you walk. For example, a rule of thumb is 100 calories per mile are burned for a 180-pound person and 65 calories per mile for a 120-pound person.
I do believe it would be less than one calorie.
500
Yes this does have a calories burned feature and many other scientific capabilities.
There exists plenty of online websites such as Spark People, Calorie Count, and My Fitness Pal that include a calorie calculator to help find out how many calories you burned. You can also download the plethora of fitness apps available for smartphones.
130-200 calories depending on the person and the meal
I burned 677 calories doing the entire workout.
about 550 per minute
36miles
well it depends but most likely about 1000
About 120 calories.