There is an activity in the class. The monitor divides 168 pieces of chocolate, 210 pencils, and 252 notebooks into the same number, and there is no remainder, so how many shares can be divided at most?
班内搞活动，班长将168块巧克力，210支铅笔，252个笔记本分成相同的份数，并且都没有余数，那么最多可以分成多少份．
<gadget id="calculator">2 * 3 * 7</gadget>
<output>42</output>

<result>42</result>