A piece of aluminum skin with a length of 1 meter and 20 centimeters and a width of 90 centimeters can be cut into an aluminum pot bottom with a diameter of 30 centimeters. How many pieces can be cut at most?
一块长1米20厘米，宽90厘米的铝皮，剪成直径是30厘米的铝锅底，最多可以剪几块？
<gadget id="calculator">120 / 30</gadget>
<output>4</output>

<gadget id="calculator">90 / 30</gadget>
<output>3</output>

<gadget id="calculator">4 * 3</gadget>
<output>12</output>

<result>12</result>