The minute hand of a large clock is 80 cm long. How many meters can its needle tip travel in a day and night?
一只大钟的分针长80厘米．它的针尖一昼夜能走多少米？
<gadget id="calculator">24 / 100</gadget>
<output>6/25 = around 0.24</output>

<gadget id="calculator">3.14 * 80 * 2 * (6/25)</gadget>
<output>120.576</output>

<result>120.576</result>