I need to do the following rounding in the column where the data obtained
from calculations:
61.4111 to 61.45
68.632 to 68.65
85.85015 to 85.85
33.68 to 33.70

So, the second digit should be 0 or 5. If the second digit was 5 it should
remain 5, if 0 and <= 5 and it should be 5, if 5 the second digit should
be 0 but the first digit will be by 1 more.

Could anybody advise what kind of formula could I use here?

Thanks in advance.