Fill in the missing line of code to compute the number of plants left over after filling a row that can hold FIT$\_$IN$\_$ROW number of plants. For example, if the number of plants is $12,$ the number of leftover plants is $3.$ Variable scan is established to a Scanner object set to the keyboard.

final int FIT$\_$IN$\_$ROW $=9$; $//$ number of plants that fit in one row

int numPlants $=$ scan.nextInt$()$;

int leftoverPlants $=\_\_\_\_\_\_\_\_\_$;