So the large rectangle is a 12x6 the shaded region is 3x3 you can write the proportion as the top side of the shaded area over the top side of the big rectangle X the left side of the shaded area over the left side of the big rectangle so 3/12 x 3/6
To do multiplication, what you must do is multiply each number from right to left and add. For example 60 * 4 4 * 0 = 0 6 * 4 = 24 The result is 240 answer 60 * 4 = 240
