Xiao Ming buys a new toothpaste with a net content 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 10 mm. How many days can this toothpaste be used? (π=3)
小明新买一枝净含量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10毫米．这枝牙膏大约能用多少天．(π=3)
<gadget id="calculator">6 / 10 / 2</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(3/10) ** 2</gadget>
<output>9/100 = around 0.09</output>

<gadget id="calculator">10 / 10</gadget>
<output>1</output>

<gadget id="calculator">3 * (9/100) * 1 * 2</gadget>
<output>27/50 = around 0.54</output>

<gadget id="calculator">54 / (27/50)</gadget>
<output>100</output>

<result>100</result>