The movements of a section of a dance step in a dance are: tap the left foot to the left, tap the right foot to the right, take two steps forward, and step back three steps; tap the left foot to the left, tap the right foot to the right Once, go three steps. Repeat the above actions continuously in the future. If every tap, step back, and step forward in a dance step is one beat, how many beats does it take for a dancer to go from the starting position to the position 50 steps ahead?
有一种舞蹈的舞步的一小节的动作是：左脚向左侧点一下、右脚向右侧点一下、进两步、退三步；左脚向左侧点一下、右脚向右侧点一下、进三步．以后不断地循环以上的动作．若舞步每点一下、退一步、进一步都是一拍，请问一位舞者从开始的位置到达前方50步的位置为止，至少共须经过多少拍？
<gadget id="calculator">2 - 3</gadget>
<output>-1</output>

<gadget id="calculator">(-1) + 3</gadget>
<output>2</output>

<gadget id="calculator">50 / 2</gadget>
<output>25</output>

<gadget id="calculator">1 + 1 + 2 + 3 + 1 + 1 + 3</gadget>
<output>12</output>

<gadget id="calculator">25 * 12</gadget>
<output>300</output>

<gadget id="calculator">3 + 1 + 1 + 3</gadget>
<output>8</output>

<gadget id="calculator">300 - 8</gadget>
<output>292</output>

<result>292</result>