Xiao Ming buys a new bottle of toothpaste with a net volume of 54 cubic centimeters. The diameter of the circular outlet of the toothpaste is 6 mm. He brushes his teeth in the morning and evening, and the length of the toothpaste squeezed out each time is about 20 mm. How many days can this bottle of toothpaste last? (Pi is taken as 3).
小明新买一瓶净含量54立方厘米的牙膏，牙膏的圆形出口的直径是6毫米．他早晚各刷一次牙，每次挤出的牙膏长约20毫米．这瓶牙膏能用多少天．(圆周率π取3)．
<gadget id="calculator">54 / 1.08</gadget>
<output>50</output>

<result>50</result>