Mom bought two boxes of the same milk at a discounted price of 20% off in the supermarket, and the total cost was 48 yuan. How much is the original price of a box of milk?
妈妈在超市按八折的优惠价格购买了两箱同样的牛奶，一共用去48元，一箱牛奶的原价是多少元？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">48 / 2 / (4/5)</gadget>
<output>30</output>

<result>30</result>