On the issue of displacement in the calculation of fixed points

[47chen-sos]

Hello author, there are many different shifts in your fixed-point number calculation, what do these shifts mean? I understand 15 and 12 because you amplify these multiples in testbench for inputs and weights, but what does it mean to shift 5 bits to the right. Also, when calculating h and c, what does the number of bits shifted to the right mean?