To solve the first expression:

3 3/4 = 3 + 3/4 = 12/4 + 3/4 = 15/4

Therefore, the expression becomes: 15/4 : 0.03

To solve the second expression:

4.52 : (-4 5/27) = 4.52 : (-115/27)

Now, let's divide the two expressions:

(15/4) / 0.03 = (15/4) / (3/100) = (15/4) * (100/3) = 500/4 = 125

Therefore, the result of the division is 125.