Aunt Wang and Aunt Zhao bought the same brand of milk powder. Aunt Wang bought 3 bags and Aunt Zhao bought 5 bags. Aunt Zhao spent 116 yuan more than Aunt Wang. What is the unit price of this brand of milk powder?
王阿姨和赵阿姨买同品牌的奶粉，王阿姨买了3袋，赵阿姨买了5袋，赵阿姨比王阿姨多花了116元，该品牌奶粉的单价是多少．
<gadget id="calculator">5 - 3</gadget>
<output>2</output>

<gadget id="calculator">116 / 2</gadget>
<output>58</output>

<result>58</result>