A conference room is 12 meters long and 9.8 meters wide, and the floor is paved with tiles of 0.35 square meters each. How many tiles are needed at least?
一个会议室长12米，宽9.8米，用每块0.35平方米的瓷砖铺地面，至少要瓷砖多少块？
<gadget id="calculator">12 * 9.8</gadget>
<output>117.6</output>

<gadget id="calculator">117.6 / 0.35</gadget>
<output>336</output>

<result>336</result>