There is a circular flowerbed with a length of 120 meters. If a lilac is planted every 6 meters along this flowerbed, and two roses are planted equidistantly between every two adjacent lilacs, how many lilacs and roses should be planted in total? ?
有一个圆形花圃长120米，若沿着这个花圃每隔6米栽一株丁香，再在每相邻的两株丁香之间等距离地栽两株月季，丁香和月季共需要栽多少株？
<gadget id="calculator">120 / 6</gadget>
<output>20</output>

<gadget id="calculator">20 * 2</gadget>
<output>40</output>

<gadget id="calculator">20 + 40</gadget>
<output>60</output>

<result>60</result>