((3,2+0,32):0,1-(50-7,2)•0,1)•100

Let's break down the expression step by step:

1. Start with the innermost parentheses containing (50-7.2):

50 - 7.2 = 42.8

2. Substitute this result back into the expression:

(3,2 + 0.32) : 0.1 - 42.8 • 0.1

3. Calculate 3.2 + 0.32:

3.2 + 0.32 = 3.52

4. Calculate (3.52) : 0.1:

3.52 : 0.1 = 35.2

5. Substitute this result back into the expression:

35.2 - 42.8 • 0.1

6. Calculate 42.8 • 0.1:

42.8 • 0.1 = 4.28

7. Substitute this result back into the expression:

35.2 - 4.28

8. Calculate the final result:

35.2 - 4.28 = 30.92

9. Finally, multiply the result by 100:

30.92 • 100 = 3092

So, the final result of the expression is 3092.