Please help with a and b with as much detail as possible

5. Calculate the probability that an electron will be found (a) between x=0.1 and 0.2nm, (b) between 4.9 and 5.2nm in a box of length L=10nm when it wavefunction is =(L2)1/2sin(L2x) Treat the wavefunction as a constant in the region of interest in this one-dimensional system. Part a: 1.8104. Part b: 5.9105