A piece of iron wire (7/20) meters long is cut 13 times into the same small pieces. What is the average length of each piece?
一根长(7/20)米的铁丝，剪13次剪成同样的小段，平均每段长是多少米？
<gadget id="calculator">7 / 20</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">13 + 1</gadget>
<output>14</output>

<gadget id="calculator">(7/20) / 14</gadget>
<output>1/40 = around 0.025</output>

<result>1/40 = around 0.025</result>