How do you write numbers without scientific notation

If a(0,0,0) and b(2,2,2) are points in coordinate space, how many paths are there from a to b that move from one lattice point to another in the positive x-,y- or z- direction?

The length and width of a rectangle are consecutive even integers the area of the rectangle is 120 squares units what are the length and width of the rectangle

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?