Divide 4 pieces of cake into 5 equal portions, how much does each portion account for in the total number of pieces
把4块蛋糕平均分成5份，每份占总块数的多少
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>