Thirty students are standing in a line on the playground. If the distance between students is 3 meters (m), find what the distance of the first student and the last student is.
3 30 1 [OP_SUB] [OP_MUL]
var_a = 3
var_b = 30
var_c = 1
var_d = var_b - var_c
var_e = var_a * var_d
print(int(var_e))