The bookstore wants to pack a batch of children's literature into boxes. Xiao Gang said: "For every 10 books in a box, there are still 9 books left." Xiaohong said: "For every 13 books in a box, there is still 1 book left." How many books are there at least in this batch of children's literature?
书店要把一批儿童文学装箱，小刚说："每10本装一箱还余9本"，小红说："每13本装一箱还差1本"．这批儿童文学最少有多少本？
<gadget id="calculator">10 * 13</gadget>
<output>130</output>

<gadget id="calculator">130 - 1</gadget>
<output>129</output>

<result>129</result>