Need help plz sovle will mark brain list

Can you me find the missing length. i attached an image.

James is playing his favorite game at the arcade. after playing the game 3 times, he has 8 tokens remaining. he initially had 20 tokens, and the game costs the same number of tokens each time. the number t of tokens james has is a function of g, the number of games he plays. write the function’s formula? t=

What is negative 3/9 times negative 2/8 ?