173,43:4,1-(45 13/16-6,2725):6-5,71
First, let's simplify the expression inside the parentheses.

45 13/16 = 45 + 13/16 = 45 + 0.8125 = 45.8125

Now, 45.8125 - 6.2725 = 39.54

Now, our expression becomes:

173.43:4.1 - 39.54:6 - 5.71

Simplifying further:

42.365 - 6.59 - 5.71

Now, subtracting:

42.365 - 6.59 = 35.775

Now, subtracting one more time:

35.775 - 5.71 = 30.065

Therefore, the answer to the expression is 30.065.