The minute hand of a clock is 25 cm long (center to tip). When the distance traveled by the tip of the minute hand is 125.6 cm, how many square centimeters is the area swept by the minute hand?
一个时钟的分针长25厘米(中心到针尖)．当这根分针的针尖走过的路程是125.6厘米时，分针所扫过的面积是多少平方厘米？
<gadget id="calculator">25 ** 2</gadget>
<output>625</output>

<gadget id="calculator">25 * 2</gadget>
<output>50</output>

<gadget id="calculator">3.14 * 50</gadget>
<output>157</output>

<gadget id="calculator">125.6 / 157</gadget>
<output>0.8</output>

<gadget id="calculator">3.14 * 625 * 0.8</gadget>
<output>1_570</output>

<result>1_570</result>