8) 0,301 * 363 : 1,21 : 0,3

First, multiply 0.301 by 363:
$$0.301 * 363 = 109.263$$
Next, divide 109.263 by 1.21:
$$109.263 : 1.21 = 90.3$$
Now, divide 90.3 by 0.3:
$$90.3 : 0.3 = 301$$

Answer: 301