If a house is paved with square bricks with an area of 6 square decimeters, it needs 800 pieces. If it is replaced with square bricks with an area of 16 square decimeters, how many pieces are needed? (Solution by proportional method)
一间房子用面积6平方分米的方砖铺地，需要800块，若改用面积16平方分米的方砖铺地，需要多少块？(用比例方法解)
<gadget id="calculator">800 * 6</gadget>
<output>4_800</output>

<gadget id="calculator">4_800 / 16</gadget>
<output>300</output>

<result>300</result>