Xiaoming's family has a cylindrical water cup, the bottom area inside is 24.5cm**2, and the height is 8cm. Xiaoming, his father and mother drink 10 cups of pure water with this water cup every day. A bucket of home-packed purified water can be drunk by their family for 10 days. How many liters is there in a barrel of this kind of home-packed purified water?
小明家有一种圆柱形水杯，里面的底面积是24.5cm**2，高是8cm．小明和爸爸、妈妈每天用这种水杯一共喝10杯纯净水．一桶家庭装纯净水他们一家能喝10天，一桶这种家庭装纯净水有多少升．
<gadget id="calculator">10 / 1_000</gadget>
<output>1/100 = around 0.01</output>

<gadget id="calculator">24.5 * 8 * 10 * (1/100)</gadget>
<output>19.6</output>

<result>19.6</result>