It is said that it takes 6.12 liters (L) of paint to paint a wall. How much is left after painting all the walls with 33.5 liters (L) of paint?
33.5 6.12 [OP_MOD]
var_a = 33.5
var_b = 6.12
var_c = var_a % var_b
print('{:.2f}'.format(round(var_c+1e-10,2)))