There are 28 identical bookcases in the library. Each bookcase has 6 shelves, and the number of books on each shelf is the same at 19. How many books are there in the library?
28 6 [OP_MUL] 19 [OP_MUL]
var_a = 28
var_b = 6
var_c = var_a * var_b
var_d = 19
var_e = var_c * var_d
print(int(var_e))