Two physical education teachers draw dots on a 30-meter-long runway. Teacher A draws dots every 4 meters from one end, and teacher B draws dots every 3 meters from the other end. Both of them start from both ends at the same time. Dots are also drawn at both ends, how many dots can two people draw at most?
一段长30米的跑道上两位体育老师画圆点，甲老师从一端起每隔4米画一个点，乙老师从另一端每隔3米画一个点，两人同时从两端画起，两端也画点，两人最多可画多少个点？
<gadget id="calculator">7 + 1</gadget>
<output>8</output>

<gadget id="calculator">30 / 3</gadget>
<output>10</output>

<gadget id="calculator">10 + 1</gadget>
<output>11</output>

<gadget id="calculator">11 - 3</gadget>
<output>8</output>

<gadget id="calculator">8 + 8</gadget>
<output>16</output>

<result>16</result>