You want to set up street lights at intervals of 4 meters (m) on both sides of a road that is 260 meters (m) long. If you put up street lights at the beginning and at the end as well, find out how many street lights are needed.
260 4 [OP_DIV] 1 [OP_ADD] 2 [OP_MUL]
var_a = 260
var_b = 4
var_c = var_a / var_b
var_d = 1
var_e = var_c + var_d
var_f = 2
var_g = var_e * var_f
print(int(var_g))