When the students go rowing, there will be one more person for every 3 people in a boat, and 3 people for every 4 people in a boat. At least how many students went there?
同学们去划船，每3人一条船多1人，每4人一条船则少3人．至少去了多少名同学？
<gadget id="calculator">4 * 3</gadget>
<output>12</output>

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

<result>13</result>