2. Divide vehicle operation costs, $293.83 per month in our hypothetical scenario, by the distance you drive per month, 750 miles (1,207 km) in our example, to calculate the cost per mile. The cost per mile for this hypothetical driver and vehicle is 39.17 cents per mile or 24 cents per kilometer.
The digestive juices are a team of powerful enzymes produced by the mouth, stomach and small intestine that break down the three major types of nutrients into their constituent parts so that they become absorbable by the body.
The stomach is like a mixer, churning and mashing together all the small balls of food that came down the esophagus into smaller and smaller pieces. It does this with help from the strong muscles in the walls of the stomach and gastric (say: GAS-trik) juices that also come from the stomach's walls. In addition to breaking down food, gastric juices also help kill bacteria that might be in the eaten food.