From one end of a 2-meter-long rope, make a mark every (1/2) meter or every (1/3) meter (the two ends are not marked, and the same position is not marked repeatedly). How many marks are there on the rope
从一根长2米的绳子一端起，每隔(1/2)米或每隔(1/3)米做一个记号(两端不做标记，同一位置也不重复做标记)．绳子上做的标记一共有多少个
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">2 / (1/2)</gadget>
<output>4</output>

<gadget id="calculator">4 - 1</gadget>
<output>3</output>

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

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">2 / (1/3)</gadget>
<output>6</output>

<gadget id="calculator">2 / 1</gadget>
<output>2</output>

<gadget id="calculator">2 - 1</gadget>
<output>1</output>

<gadget id="calculator">6 - 1 - 1</gadget>
<output>4</output>

<gadget id="calculator">3 + 4</gadget>
<output>7</output>

<result>7</result>