Answer:
20.863
Explanation:
go from left to right first and do:
8.15 x 4 = 32.6
then you would divide the 32.6 by 5 which gets you 6.52
Once you have that, and nothing else in the () can be divided multiplied added, or subtracted, then you do the last part
6.52 x 3.2
which equals
20.864