A bathroom is 3m long, 2m wide, and 2.5m high. How many tiles are needed at least with an area of 200cm**2 on the four walls and the floor of the bathroom?
一个浴室长3m，寬2m，高2.5m，在浴室的四壁和地面贴上面积是200cm**2的瓷砖，至少需要多少块？
<gadget id="calculator">3 * 100</gadget>
<output>300</output>

<gadget id="calculator">300 * 200</gadget>
<output>60_000</output>

<gadget id="calculator">2.5 * 100</gadget>
<output>250</output>

<gadget id="calculator">300 * 250 * 2</gadget>
<output>150_000</output>

<gadget id="calculator">200 * 250 * 2</gadget>
<output>100_000</output>

<gadget id="calculator">60_000 + 150_000 + 100_000</gadget>
<output>310_000</output>

<gadget id="calculator">310_000 / 200</gadget>
<output>1_550</output>

<result>1_550</result>