Teacher Wang buys 1 box of beverages, 4 bottles of 4 bottles or 6 bottles of 6 bottles, and there is 1 bottle left. How many bottles are there at least in this box of drinks?
王老师买1箱饮料，4瓶4瓶地数或6瓶6瓶地数，都剩下1瓶．这箱饮料至少有多少瓶？
<gadget id="calculator">2 * 2 * 3</gadget>
<output>12</output>

<gadget id="calculator">12 + 1</gadget>
<output>13</output>

<result>13</result>