Assume this:

int a = 7; double b = 0.4; 

Evaluate each of the following expressions by hand. Show your work, using a separate line for each evaluation step. Check your work by writing and executing a program that evaluates these expressions and outputs the results.

1. a + 3 / a
2. 25 / ((a - 4) * b)
3. a / b * a
4. a % 2 - 2 % a