There is a big clock hanging in the main hall of the school. Its minute hand is 40 cm long. The tip of the minute hand turns 3 times. What is the total distance in cm?
学校正厅挂一只大钟，它的分针长40厘米，这根分针的针尖转动3周，所有的路程是多少厘米？
<gadget id="calculator">2 * 3.14 * 40</gadget>
<output>251.2</output>

<gadget id="calculator">251.2 * 3</gadget>
<output>753.6</output>

<result>753.6</result>