The length of a rectangular brick is 42 cm and the width is 28 cm. How many bricks should be used to pave a square floor with such bricks?
一块长方形砖的长是42厘米，宽是28厘米，用这样的砖铺一个正方形地面，至少用多少块？
<gadget id="calculator">84 / 42</gadget>
<output>2</output>

<gadget id="calculator">84 / 28</gadget>
<output>3</output>

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

<result>6</result>