A conference room is paved with square tiles. If you use square bricks with a side length of 3cm, you need 350 pieces. If you use 10cm**2 square bricks instead, how many pieces will you need?
一个会议室用方砖铺地．用边长3cm的方砖铺，需要350块，如果改用10cm**2的方砖铺，需要多少块．
<gadget id="calculator">3 * 3 * 350</gadget>
<output>3_150</output>

<gadget id="calculator">3_150 / 10</gadget>
<output>315</output>

<result>315</result>