There are 19 boxes with 46 books in each box and several boxes with 170 pencils in each box. If the number of books and pencils is 1894 in total, how many boxes of pencils are there?
1894 46 19 [OP_MUL] [OP_SUB] 170 [OP_FDIV]
var_a = 1894
var_b = 46
var_c = 19
var_d = var_b * var_c
var_e = var_a - var_d
var_f = 170
var_g = var_e // var_f
print(int(var_g))