Rectangular bricks are 36cm long and 24cm wide. How many bricks are needed to pave a large square floor with this kind of bricks?
长方形砖长36cm，宽24cm，用这种砖铺成一块大正方形的地，至少需要多少块．
<gadget id="calculator">2 * 2 * 2 * 3 * 3</gadget>
<output>72</output>

<gadget id="calculator">72 / 36</gadget>
<output>2</output>

<gadget id="calculator">72 / 24</gadget>
<output>3</output>

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

<result>6</result>