How do you divide 420 and 10 showing your work?

Pls yall i really need the answer fr fr

Quadrilateral ghij has coordinates g(5, 1), h(4, -3), i(6, -1), and j(2, 1). if the quadrilateral is reflected over the line y = x, what are the coordinates of h'?

Robert has 78 tomatoes and 56 cucumbers he wants to plant them in equal rows how many in each row