classroom is 13.6 meters long and 6.4 meters wide, and the floor is paved with square bricks with an area of 0.16 square meters. How many bricks are needed at least?
一间教室长13.6米，宽6.4米，用面积0.16平方米的方砖铺地，至少需要多少块？
<gadget id="calculator">6.4 / 0.16</gadget>
<output>40</output>

<gadget id="calculator">13.6 * 40</gadget>
<output>544</output>

<result>544</result>