How many circles with a diameter of 2 cm can be cut from a rectangle with a length of 10 cm and a width of 6 cm?
一个长10cm，宽6cm的长方形中，最多能剪出多少个直径为2厘米的圆．
<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">5 * 3</gadget>
<output>15</output>

<result>15</result>