Can you find the missing piece of the Porsche?

You can find some missing letters in the picture. By placing two particular letters in the spaces, you can form a nine lettered word beginning from one of the corners and going clockwise direction to the middle. Can you find out the letters and the word?

O_er_t_o_

Complete the missing letters of the given word.

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

My first is in chocolate but not in ham. My second is in cake and also in jam. My third at tea time is easily found. Altogether, this is a friend who is often around. What is it?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

Can you solve this picture maths equation?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

I have a big mouth and I am also quite loud! I am NOT a gossip but I do get involved with everyone's dirty business.