The diameter of the toothpaste outlet is 1 cm. Every time Xiaohong brushes her teeth, she squeezes out 0.8cm of toothpaste, so that she takes it every morning and evening. This toothpaste has been used for 50 days. How many cubic centimeters is this toothpaste?
牙膏出口处的直径是1cm．小红每次刷牙挤出0.8cm长的牙膏，这样她每天早晚各一次，这条牙膏刚好用50天，这条牙膏是多少立方厘米？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) ** 2</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">3.14 * (1/4) * 0.8</gadget>
<output>0.628</output>

<gadget id="calculator">0.628 * 2 * 50</gadget>
<output>62.8</output>

<result>62.8</result>