Add 16 and 13 and 5 then after you got your total count up to 75 use a paper to help you solve then the amount you counted up to will be the amount of the cost of the video game
You have to move the decimal point from the end to between the 6 and 5 then count how many spaces you moved it because this will become the power on the 10.
6.5 x 10^7