Sift dry ingredients, mochiko, sugar and baking soda in a large bowl. Melt margarine and chocolate chips together and combine with evaporated milk, vanilla extract and eggs. Mix well and stir any ingredients until it becomes a smooth batter. Then pour into greased 9x13 pan. Bake in 350 degree pre-heated oven. 45-55 min, cool, then serve. Do not refrigerate.