Emily and Kayla collect seashells. Emily has 400 + 90 + 2 seashells. Kayla has four hundred ninety- four seashells. Emily and Kayla put all the seashells on a large tray and start to count them. Emily wants to have a total of one thousand seashells. After counting for a while, Kayla thinks they will have to find seven more seashells. Is Kayla correct?