Please explain how to do without a T4 calculator, I cannot afford one.

Using the TI-84 calculator, find the area under the standard normal curve that lies between the following z-values. Round the answers to four decimal places. (a) Find the area under the standard normal curve that lies between z = -2.32 and z = 1.58. (b) Find the area under the standard normal curve that lies between z = -1.92 and z = -1.17. (c) Find the area under the standard normal curve that lies between z = 1.36 and z = 1.78. (d) Find the area under the standard normal curve that lies between z = -2.49 and z = 0.61