A dripping faucet drains 10 kilograms of water every day. According to this calculation, how many kilograms of water will be wasted in the first quarter of 2010.
一个滴水的龙头每天流掉10千克水．照这样计算，2010年第一季度要浪费掉多少千克水．
<gadget id="calculator">31 + 28 + 31</gadget>
<output>90</output>

<gadget id="calculator">10 * 90</gadget>
<output>900</output>

<result>900</result>