Zhang Ming's grandma just turned 70 years old on August 2, 2006. When was Zhang Ming's grandma born on August 2?
张明的奶奶到2006年的8月2日正好满70周岁，张明奶奶出生于多少年8月2日．
<gadget id="calculator">2_006 - 70</gadget>
<output>1_936</output>

<result>1_936</result>