The school conference room is paved with square bricks, and 36 square decimeters of square bricks are used, and 560 pieces are needed; if it is replaced with 64 square decimeters of square bricks, how many pieces are needed?
学校会议室用方砖铺地，用36平方分米的方砖铺，需要560块；如果改用64平方分米的方砖铺，需要多少块？
<gadget id="calculator">36 * 560</gadget>
<output>20_160</output>

<gadget id="calculator">20_160 / 64</gadget>
<output>315</output>

<result>315</result>