Suppose we have two dictionaries as below:

```
dict_a_to_b = {2:4, 6:9, 9:3}

dict_a_to_c = {2: 0.1, 6:0.2, 9: 0.8, 10:0.6, 50: 0.77, 12:0.56}

```

How to map these two dictionaries to make dict\_c\_to\_b in python? The items in second dictionary is greater than items in first.

Output should be:

```
dict_c_to_b = {0.1:4, 0.2:9, 0.8:3}

```