You were supposed to multiply 3 by a number, but mistakenly multiplied 6 by a number, and got 42. Find the result of the correct calculation.
42 6 [OP_DIV] 3 [OP_MUL]
var_a = 42
var_b = 6
var_c = var_a / var_b
var_d = 3
var_e = var_c * var_d
print(int(var_e))