There are 9/5, 1/10, 1/2, and 1/6. What do you get if you add them all together?
9/5 1/10 [OP_ADD] 1/2 [OP_ADD] 1/6 [OP_ADD]
var_a = 1.8
var_b = 0.1
var_c = var_a + var_b
var_d = 0.5
var_e = var_c + var_d
var_f = 0.16666666666666666
var_g = var_e + var_f
print('{:.2f}'.format(round(var_g+1e-10,2)))