The Xinhua Farm Tool Factory plans to produce a batch of farm tools. 360 pieces have been produced, and 900 pieces are left. What percentage of the annual plan is left to be completed?
新华农具厂计划生产一批农具，已经生产了360件，还剩900件，还剩全年计划的几分之几没有完成？
<gadget id="calculator">360 + 900</gadget>
<output>1_260</output>

<gadget id="calculator">900 / 1_260</gadget>
<output>5/7 = around 0.714286</output>

<result>5/7 = around 0.714286</result>