I made a mistake and added 7/5 to this particular number, when I had to subtract 7/5 from this number and then multiply it by 5, and it became 81/20. Find the rightly calculated value.
81/20 7/5 [OP_SUB] 7/5 [OP_SUB] 5 [OP_MUL]
var_a = 4.05
var_b = 1.4
var_c = var_a - var_b
var_d = 1.4
var_e = var_c - var_d
var_f = 5
var_g = var_e * var_f
print('{:.2f}'.format(round(var_g+1e-10,2)))