There were 1.6 liters (L) of chocolate milk. If you drank 0.8 liters (L) yesterday and 0.3 liters (L) today, how many liters (L) of chocolate milk are left?
1.6 0.8 [OP_SUB] 0.3 [OP_SUB]
var_a = 1.6
var_b = 0.8
var_c = var_a - var_b
var_d = 0.3
var_e = var_c - var_d
print('{:.2f}'.format(round(var_e+1e-10,2)))