To pave a house with square bricks, it takes 350 pieces to use 8dm**2 square bricks, how many pieces are needed if 10dm**2 square bricks are used? (Solve with ratio)
用方砖铺一间房子，用8dm**2的方砖要350块，若用10dm**2的方砖需要多少块？(用比例解)
<gadget id="calculator">8 * 350</gadget>
<output>2_800</output>

<gadget id="calculator">2_800 / 10</gadget>
<output>280</output>

<result>280</result>