The school cafeteria is paved with square bricks. If you use square floor tiles with a side length of 3DM, you need 350 pieces; if you use 10DM**2 square bricks instead, how many pieces are needed?
学校食堂用方砖铺地．用边长是3DM的正方形地砖铺，需要350块；如果改用10DM**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>