A living room is 13 meters long and 7 meters wide, and it took 546 floor tiles to cover it. How many pieces are paved per square meter on average?
一间会客厅长13米，宽7米，用了546块地砖才铺满．平均每平方米铺了多少块？
<gadget id="calculator">13 * 7</gadget>
<output>91</output>

<gadget id="calculator">546 / 91</gadget>
<output>6</output>

<result>6</result>