The People's Republic of China was established on October 1, 1949. How many years has it been since October 1 this year?
中华人民共和国在1949年10月1日成立，到今年10月1日成立了多少周年．
<gadget id="calculator">2_017 - 1_949</gadget>
<output>68</output>

<result>68</result>