The Chinese People's Liberation Army was established on August 1, 1927. By August 1, 2011, how many years has it been since the founding of the army?
中国人民解放军是1927年8月1日建立的，到2011年8月1日，建军多少周年．
<gadget id="calculator">2_011 - 1_927</gadget>
<output>84</output>

<result>84</result>