A circular water cellar occupies a ground perimeter of (157/25) meters, what is the radius of the ground occupied by this water cellar in meters.
一个圆形水窖，占地面周长是(157/25)米，这个水窖占地面的半径是多少米．
<gadget id="calculator">157 / 25</gadget>
<output>157/25 = around 6.28</output>

<gadget id="calculator">(157/25) / 3.14 / 2</gadget>
<output>1</output>

<result>1</result>