A pool can hold 10 liters of water. If 2000 milliliters of water is poured into it every second, how many seconds will it take to fill it up?
一个水池可盛水10升，如果每秒往里放2000毫升的水，多少秒可以放满．
<gadget id="calculator">1_000 / 2_000</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">10 * (1/2)</gadget>
<output>5</output>

<result>5</result>