Divide (4/7) into 3 parts on average, that is, find out how much (4/7) is.
把(4/7)平均分成3份，也就是求(4/7)的多少是多少．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<result>1/3 = around 0.333333</result>