You were supposed to subtract 40 from a certain number, but you accidentally added 21 and the result was 52. What is the answer to the corrected calculation?
52 21 [OP_SUB] 40 [OP_SUB]
var_a = 52
var_b = 21
var_c = var_a - var_b
var_d = 40
var_e = var_c - var_d
print(int(var_e))