 <translate> Give the step-by-step reasoning process and then the final answer. Laura wants to bake a cake for her mother. She checks the recipe and the pantry and sees that she needs to buy 2 cups of flour, 2 cups of sugar, a cup of butter, and two eggs. The flour costs $4. The sugar costs $2. The eggs cost $.5, and the butter costs $2.5. When she is done baking it, she cuts the cake into 6 slices. Her mother enjoys a piece the first two days. But on the third day, they discover that Kevin, her dog, ate the rest of the cake. How much did the amount the dog ate cost? <yor> Ṣàlàyé bí wọ́n ṣe ń ronú lẹ́ẹ̀kan-lẹ́ẹ̀kan, kó o sì wá sọ ìdáhùn tó o máa fún wọn. Laura féé ṣe àkàrà fún ìyá rẹ̀. Ó yẹ ohun tí wọ́n kọ sínú ìwé náà àti ibi tí wọ́n kó oúnjẹ sí wò, ó sì rí i pé òun ní láti ra ife ìyẹ̀fun méjì, ife ṣúgà méjì, ife bọ́tà kan àti ẹyin méjì. Owó tí wọ́n ń ta ìyẹ̀fun náà jẹ́ dọ́là mẹ́rin. Dọ́là méjì ni owó ṣúgà náà. Owó ẹyin náà jẹ́ dọ́là márùn-ún, owó bọ́tà náà sì jẹ́ dọ́là méjì ààbọ̀. Nígbà tó bá ti ṣe é tán, á gé kéèkì náà sí ìpín mẹ́fà. Ìyá rẹ̀ máa ń gbádùn iṣẹ́ náà fún ọjọ́ méjì àkọ́kọ́. Àmọ́ lọ́jọ́ kẹta, wọ́n rí i pé Kevin, ìyẹn ajá rẹ̀, ló jẹ àṣẹ́kù àkàrà náà. Báwo ni iye tí ajá náà jẹ ṣe pọ̀ tó? 