Of the 13/4 liters (l) of water in the bucket, 12/5 liters (l) were used for cleaning, and 11/6 liters (l) of water was refilled into the bucket. Find how many liters (l) of water are left in the bucket.
13/4 12/5 [OP_SUB] 11/6 [OP_ADD]
var_a = 3.25
var_b = 2.4
var_c = var_a - var_b
var_d = 1.8333333333333333
var_e = var_c + var_d
print('{:.2f}'.format(round(var_e+1e-10,2)))