Step-by-step explanation:
you did not write the actual question.
but I guess it is "how much water is left in the tub ?"
if that is the case, then we have the subtraction
127 liters - 950 milliliters
1 liter = 1000 milliliters ("milli" stands for 1/1000, in this case 1/1000 of a liter).
so,
950 milliliters (ml) = 0.950 = 0.95 liters (l).
and our subtraction (now that we have established the same dimensions or denominators) is
127 l - 0.95 l = 126.05 liters