We know that we can express the return

in terms of the TD errors at steps

$,$

$.$

Now consider that we observe an episode where the TD errors from time

are as follows:

$.$ After these $5$ steps, the episode terminates.

If

$,$ discount factor

and trace decay factor

$,$ what is the

$-$return at time

$?$

Please specify the value up to $6$ decimal digits.