A piece of iron sheet with a length of 12 meters and a width of 0.9 meters is cut into discs with a radius of 15 cm. How many pieces can be cut at most?
一块长12米、宽0.9米的铁皮，剪成半径是15厘米的圆片，最多能剪多少块．
<gadget id="calculator">100 / 30</gadget>
<output>10/3 = around 3.333333</output>

<gadget id="calculator">1.2 * (10/3)</gadget>
<output>4</output>

<gadget id="calculator">0.9 * (10/3)</gadget>
<output>3</output>

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

<result>12</result>