Students in class 61 arrange a classroom with a width of 6 meters, and hang a balloon every (1/3) meter. How many balloons should be prepared?
六一班同学布置宽6米教室，每(1/3)米挂一个气球，要准备多少个气球？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">6 / (1/3)</gadget>
<output>18</output>

<gadget id="calculator">18 - 1</gadget>
<output>17</output>

<result>17</result>