Xiaohong bought 3 cakes for breakfast, each for 4 yuan, and bought a cup of milk for 3 yuan. How much did she spend in total?
小红早餐买了3个蛋糕，一个4元，又买了一杯3元的牛奶，她一共花了多少元．
<gadget id="calculator">4 * 3</gadget>
<output>12</output>

<gadget id="calculator">12 + 3</gadget>
<output>15</output>

<result>15</result>