Twelve students are about to line up on the playground. The total length of the playground is 200 meters (m) and students must keep 20 meters (m) apart. How many students can line up in total?
12 200 20 [OP_DIV] [OP_SUB]
var_a = 12
var_b = 200
var_c = 20
var_d = var_b / var_c
var_e = var_a - var_d
print(int(var_e))