From a rectangular iron plate with a length of 10 decimeters and a width of 5 decimeters, how many circular iron plates with a diameter of 2 decimeters can be cut at most.
在一块长10分米、宽5分米的长方形铁板上，最多能截取多少个直径是2分米的圆形铁板．
<gadget id="calculator">4 + 4 + 3</gadget>
<output>11</output>

<result>11</result>