11 potted flowers should be placed on a 20-meter-long cement balcony. No matter how they are placed, at least how many pots are placed no more than 2 meters apart.
要在20米长的水泥阳台上放11盆花．不管怎么放，至少有多少盆之间的距离不超过2米．
<gadget id="calculator">11 - 1</gadget>
<output>10</output>

<gadget id="calculator">20 / 10</gadget>
<output>2</output>

<result>2</result>