There are three numbers 85.9, 5.31, and 43/2. What is the sum of them all?
85.9 5.31 [OP_ADD] 43/2 [OP_ADD]
var_a = 85.9
var_b = 5.31
var_c = var_a + var_b
var_d = 21.5
var_e = var_c + var_d
print('{:.2f}'.format(round(var_e+1e-10,2)))