You just multiply each -6 as you pass by each. 4 x -6 = -24 -24 x -6 = 144 (multiplying two negative numbers equal a positive product) 144 x -6 = -864 -864 x -6 = 5,184 5,184 x -6 = 31,104 31,104 x -6 = -186,624 -186,624 x -6 = 1,119,744 1,119,744 x -6 = -6,718,464