How many such circles can be cut from a rectangle with the largest diameter and the least amount remaining in a rectangle with a length of 12 cm and a width of 8 cm?
一张长12厘米、宽8厘米的长方形里剪直径最大且剩余最少的圆，一共可以剪多少个这样的圆．
<gadget id="calculator">12 - 8</gadget>
<output>4</output>

<gadget id="calculator">8 / 4</gadget>
<output>2</output>

<gadget id="calculator">1 + 2</gadget>
<output>3</output>

<result>3</result>