A cuboid carton with a length of 30cm, a width of 12cm, and a height of 5cm can hold cylindrical cans with a bottom radius of 3cm and a height of 5cm. How many cans can it hold at most?
一个长30cm，宽12cm，高5cm的长方体纸箱，在里面装下底面半径是3cm，高是5cm的圆柱形罐头盒，最多可以装下多少个．
<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">30 / 6</gadget>
<output>5</output>

<gadget id="calculator">12 / 6</gadget>
<output>2</output>

<gadget id="calculator">5 * 2</gadget>
<output>10</output>

<result>10</result>