Today there are 42 Chinese textbooks, 112 mathematics textbooks, and 70 natural textbooks, which are divided into several piles on average. The number of these three kinds of textbooks in each pile is equal, so how many piles can be divided at most?
今有语文课本42册，数学课本112册，自然课本70册，平均分成若干堆．每堆中这三种课本的数量分别相等，那么最多可分多少堆．
<gadget id="calculator">2 * 7</gadget>
<output>14</output>

<result>14</result>