Uncle Wang, a large grain grower, measured that the germination rate of a certain wheat seed was 80%. In order to make the seedlings come out, how many more seeds should be prepared.
种粮大户王大伯测得某种小麦种子的发芽率是80%，为了使苗出齐，应多准备多少的种子．
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 / (4/5)</gadget>
<output>5/4 = around 1.25</output>

<result>5/4 = around 1.25</result>