Can you replace the question mark with the correct number?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

It is a six-letter word.
The first four letters are me.
The second and last letters are the same.
The fourth second and last letter is payment.

Who is it?

How do you go from 98 to 720 using just one letter?

Which wheel of car does not rotate when you turn your car right?

What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

What does this simple rebus mean?

The horse jumps over the king.
Strangely there is absolutely no scratch on him.

Can anyone explain, how is this possible?

How can you make a TV, a bed, a dog, and a car liquid?