I made the mistake of adding a number by 3.1 to get 8.9, which was supposed to be multiplied by 3.1. What is the correctly calculated value multiplied by 2.5?
8.9 3.1 [OP_SUB] 3.1 [OP_MUL] 2.5 [OP_MUL]
var_a = 8.9
var_b = 3.1
var_c = var_a - var_b
var_d = 3.1
var_e = var_c * var_d
var_f = 2.5
var_g = var_e * var_f
print('{:.2f}'.format(round(var_g+1e-10,2)))