A piece of rope is 3 meters long, divide it into 7 parts on average, how many meters is each part; the length of each part is 1 meter ((())/(())); the length of each part is 3 meters ((( ))/(())).
一段绳子长3米，把它平均分成7份，每份长多少米；每份的长度是1米的((())/(()))；每份的长度是3米的((())/(()))．
<gadget id="calculator">3 / 7 / 1</gadget>
<output>3/7 = around 0.428571</output>

<result>3/7 = around 0.428571</result>