A lace is sewn around a circular tablecloth with a diameter of 1 meter, and the joint is 4 cm. How many meters is the length of this lace?
在一块直径是1米的圆形桌布周围缝一条花边，接头处4厘米，这条花边长多少米．
<gadget id="calculator">3.14 * 1</gadget>
<output>3.14</output>

<gadget id="calculator">4 / 100</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">3.14 + (1/25)</gadget>
<output>3.18</output>

<result>3.18</result>