The Everbright Flower Market held a flower show, exhibiting 780 pots of roses, and the orchids on display were roses (2/5), how many pots of orchids were on display?
光大花卉市场举办花展，展出玫瑰780盆，展出的兰花是玫瑰的(2/5)，展出兰花多少盆？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">780 * (2/5)</gadget>
<output>312</output>

<result>312</result>