How to place the shadow of a flying object.

In contour drawings crossing lines is one way to indicate this

Bile juices in the breakdown of fats. an injury to the (liver, mouth, or salivary glands) may cause a decrease in the production of bile juices. this decrease in bile juices may lead to decreased production of (amino acids, carbohydrates, or fatty acids)

Using the correct order of operations, what does this formula equal? =(4-2)*6/2.